Keiurot 193 194 Address LED Bulbs
4.6Editor score
Broad 10–30V AC/DC compatibility
Dimmable miniature wedge design
Two replacement bulbs included
In this guide
A light bulb for an address sign must fit both the fixture and the way you want the finished plaque to look. Socket type, operating voltage, color temperature, weather resistance, and dimmer compatibility can all determine whether a replacement works as intended.
This guide compares ten options suited to illuminated address plaques, sign fixtures, cabinet lights, landscape lighting, and other low-voltage or medium-base applications. We evaluated the stated bulb numbers, bases, voltage ranges, light output, pack quantities, and intended environments without claiming hands-on testing.
Each review explains where the product is strongest, where its specifications may limit it, and who should consider it. The top selections reflect the strongest overall fit for address-sign replacement, while prices and availability can change, so confirm the current listing details before purchasing.
Top 3 Picks for Best Light Bulb for Address Sign
Keiurot 193 194 Four-Pack
4.8Editor score
Four warm-white LED bulbs
Wide AC and DC compatibility
Extensive replacement bulb references
Keiurot T3 193 194 LED Bulbs
4.7Editor score
Works across common low voltages
Soft white LED illumination
Two-pack with one-year warranty
Top 10 Best Light Bulb for Address Sign in 2026 Compared
The comparison below places the ten bulbs side by side by base, voltage, light source, output, and stated use. Because address fixtures vary, the most important checks are the existing socket and transformer's voltage before color, pack size, or dimming preferences.
ProductsSpecificationsEditor scorePrice
Best Budget
Keiurot 193 194 Two-Pack
10–30V AC/DC input
Dimmable LED design
Miniature wedge base
Two bulbs included
4.6Editor score
Editor's Choice
Keiurot T3 193 194 Two-Pack
10–30V AC/DC input
T3 wedge format
Soft white illumination
Two bulbs included
4.7Editor score
Editor's Choice
Keiurot 193 194 Four-Pack
10–30V AC/DC input
Dimmable LED design
Warm white illumination
Four bulbs included
4.8Editor score
Mandala Crafts G40 Sign Bulbs
7.5-watt incandescent
110–130V operating range
E26 medium base
Approximately 40 lumens
4.0Editor score
Feit Electric S11 LED
7.5-watt LED output
E26 medium base
Soft white finish
Ten bulbs included
4.7Editor score
Westinghouse White S11 LED
1-watt LED consumption
E26 medium base
80-lumen warm output
2700K color temperature
4.5Editor score
Westinghouse Clear S11 Four-Pack
1-watt LED consumption
E26 medium base
80-lumen warm output
Four bulbs included
4.4Editor score
CEC Industries 1487 Bulbs
14-volt operating system
2.8-watt power use
E10 screw base
Box of ten
4.5Editor score
LED Address Sign Replacement Kit
10–30V AC/DC input
Ba9S bayonet base
Pure white illumination
Two bulbs included
3.7Editor score
Westinghouse Clear Sign Bulb
11-watt incandescent
Clear glass envelope
Standard screw base
11S14/130 format
4.5Editor score
1. Keiurot 193 194 Two-Pack – Broad Low-Voltage Compatibility
Keiurot 193 194 Two-Pack
10–30V AC/DC operation
Dimmable LED illumination
Miniature wedge socket
Two-bulb package
The Keiurot House Number Light Bulb193 194 Address Bulb Dimmable10-30V AC/DC is a purpose-focused replacement for illuminated address plaques and other low-voltage fixtures. Its 4.6 rating reflects a generally favorable customer reception, while the stated 10–30V AC/DC operating range gives it more flexibility than a bulb designed for one narrow voltage class.
Pros
- Works with common transformers
- Supports dimmable installations
- Wide bulb-number cross-reference
- Low-voltage energy use
- One-year replacement warranty
Cons
- Requires compatible wedge socket
- Not designed for standard mains bulbs
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The strongest feature is compatibility. It works with fixtures powered by 12V, 16V, 18V, and 24V supplies without requiring a transformer change, according to the product information. It is also described as dimmable and compatible with miniature wedge sockets, making it appropriate for a modern address light in which dimming is desired.
The cross-reference list includes 124, 168, 193, 194, 158, 161, 161R, 163, 184, 192, 2825, W5W, 2821, W3W, 906, and 912 for lower-voltage fixtures. Several additional numbers are listed for 24V and 28V applications. That breadth is helpful when the old bulb is physically similar but its printed number is difficult to interpret.
This is a compelling choice for a homeowner replacing low-voltage 193 or 194 bulbs without wanting to replace the entire transformer. The trade-off is that it will not fit an E26 medium-base fixture and should only be used where the socket, voltage, and dimmer arrangement are compatible. For the correct miniature wedge setup, it combines useful flexibility with a clearly specified use case.
Transformer-Friendly Replacement Design
Because the listed bulb accepts common low-voltage AC and DC supplies, it can replace an original filament-style lamp without changing the transformer. That makes it a practical way to modernize an existing address plaque while retaining its original wiring and low-voltage system.
Useful Fitment Reference Range
The long list of replacement numbers reduces guesswork when an existing bulb carries an unfamiliar designation. Confirm that both the physical base and operating voltage match before ordering, even when a replacement number appears in the list.
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2. Keiurot T3 193 194 Two-Pack – Flexible Soft-White Replacement
Keiurot T3 193 194 Two-Pack
10–30V AC/DC operation
T3 miniature wedge format
Dimmable LED design
Two-bulb package
The Keiurot House Number Light Bulb 193 194 Address Bulb Dimmable,10-30V AC/DC is a well-rounded LED replacement for address plaques, RV cabinet lighting, landscape lighting, deck lighting, and other low-voltage fixtures. It holds a 4.7 rating and combines a T3 form with broad voltage support, giving it a useful balance of fit and flexibility.
Pros
- Strong 4.7 customer rating
- Works across common voltages
- Bright, soft LED output
- Waterproof design specified
- One-year warranty included
Cons
- Only two bulbs included
- Not for standard medium bases
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Its electrical range covers 10–30V AC and DC, including 12V, 16V, 18V, 24V, and 28V systems. The description says no transformer change is needed when using one of those listed supplies. Dimmability is another important strength for illuminated address signs that are controlled by a compatible dimmer.
Compared with the original filament-style lamps it is intended to replace, this LED is described as more energy efficient, capable of good heat dissipation, and able to produce bright, soft illumination. The waterproof construction adds appeal for exposed residential signs, although proper fixture sealing remains important in an outdoor installation.
The package includes two white T3 193 and 194 bulbs, so it is a sensible choice for one address plaque with multiple lamp positions. It will not work in a standard E26 socket, and a homeowner with numerous illuminated signs may prefer a larger multipack. For a conventional low-voltage house-number fixture, however, its voltage range and dimmable design are compelling.
One Bulb for Multiple Low-Voltage Uses
This T3 LED is not limited to address plaques; the listed applications also include RV cabinets, landscape lights, sidewalks, and decks. That flexibility makes it useful for maintaining several compatible low-voltage fixtures with the same replacement bulb.
Soft Output for Residential Signage
The stated bright, soft output is well suited to residential address lighting, where harsh glare can reduce legibility. The bulb is also dimmable, allowing a compatible system to be adjusted after installation.
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3. Keiurot 193 194 Four-Pack – Best Overall Address-Sign Upgrade
Keiurot 193 194 Four-Pack
10–30V AC/DC operation
Dimmable LED illumination
Warm white light output
Four-bulb package
The Keiurot House Number Light Bulb193 194 Address Bulb Dimmable10-30V AC/DC stands out as the strongest all-around selection in this group. Its 4.8 rating is the highest among the listed products, and the four warm-white bulbs are explicitly packaged for house-number applications and other compatible low-voltage fixtures.
Pros
- Highest listed rating
- Four bulbs for larger plaques
- Warm white illumination
- Broad transformer compatibility
- One-year warranty included
Cons
- Requires a miniature wedge base
- May be more than one fixture needs
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The bulb operates across 10–30V AC and DC, covering the commonly listed 12V, 16V, 18V, and 24V supplies. It is also described as dimmable and compatible with miniature wedge sockets. These characteristics make it especially relevant for a lit address plaque that already uses 193 or 194-style replacements but still relies on filament lamps.
Compared with halogen lamps, the listing highlights lower energy consumption, bright and soft output, a waterproof design, and long service life. The extensive bulb-number cross-reference adds practical value when the existing lamp is marked with a less familiar number. A one-year replacement or refund warranty also provides some reassurance for the buyer.
The main limitation is fit: it is not a standard E26 bulb and should never be forced into an incompatible socket. It also includes more bulbs than a single-lamp fixture needs. Even so, the combination of warm light, dimming, broad voltage support, and four-unit convenience makes this the most balanced pick for homeowners updating a multi-lamp address sign.
Warm Illumination for Curb Appeal
Warm-white output gives an address plaque a softer residential appearance while maintaining clear visibility. It pairs particularly well with dark lettering and decorative housings where the goal is comfortable nighttime visibility rather than stark industrial lighting.
Four Bulbs for Multi-Lamp Systems
The four-pack is well suited to larger plaques or a property with several compatible lamp positions. Keeping identical replacement bulbs in one package can also simplify future maintenance and make color consistency easier.
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4. Mandala Crafts G40 Sign Bulbs – Frosted Specialty-Lighting Choice
Mandala Crafts G40 Sign Bulbs
7.5-watt incandescent source
110–130V operating range
E26 medium screw base
Approximately 40 lumens
The Mandala Crafts E26 Base G40 7.5W Frosted Low Wattage Bulbs for Signs is a specialty incandescent option for signs, indicator housings, displays, and controlled equipment. Its 4.0 rating is the lowest among the ten products, but the bulb's narrow specialty purpose means it should be judged against its stated applications rather than general household lighting.
Pros
- Designed specifically for signs
- Frosted glass softens output
- E26 socket compatibility
- Compact specialty bulb format
Cons
- Incandescent rather than LED
- Short approximately 1,500-hour life
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It produces approximately 40 lumens from 7.5 watts and uses a familiar E26 medium base. That makes it relevant to address signs or decorative light boxes designed around a standard screw socket, particularly when a frosted G40 appearance is preferred. Its 110–130V operating range is entirely different from the low-voltage wedge models in this guide.
The product is explicitly not intended for general household illumination. Its compact frosted-glass G40 format is designed to provide visible indicator light, and its stated average service life under specialty conditions is approximately 1,500 hours. That lifespan is substantially shorter than the LED options in the list.
The right buyer is someone with a compatible E26 sign fixture operating on 110–130V who values the traditional frosted incandescent look. It is less attractive for a typical modern low-voltage address plaque, and it should not be selected merely because a listing mentions signs. Confirm the socket, voltage, enclosed-fixture requirements, and expected service interval before making it part of a sign upgrade.
Frosted Light for Sign Visibility
The frosted G40 glass is intended to diffuse light while retaining visibility inside sign and indicator systems. This makes it a practical specialty format for enclosed decorative housings that call for a soft, compact bulb.
Designed for Controlled Fixtures
This bulb is explicitly limited to signs, indicators, displays, and specialty equipment. It should not be treated as a general-purpose household bulb, even though its E26 base may look familiar.
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5. Feit Electric S11 LED – Versatile Ten-Bulb Sign Pack
Feit Electric S11 LED
7.5-watt LED source
E26 medium screw base
Soft white S11 format
Ten-bulb package
The Feit Electric LED S11 E26 SW 7.5W is a ten-bulb accent-lighting pack intended for string lights, signs, curio cabinets, outdoor-rated wall fixtures, and totally enclosed fixtures. Its 4.7 rating indicates strong customer reception, and the large pack makes it convenient for multiple sign positions or ongoing maintenance.
Pros
- Convenient ten-bulb quantity
- Designed for signs and cabinets
- Instant full brightness
- Suitable for enclosed fixtures
- Traditional accent-bulb appearance
Cons
- Detailed voltage not specified
- Soft white limits color choice
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Its S11 shape and E26 base offer a recognizable decorative format that can fit specialty fixtures accepting a medium screw base. The soft-white finish is designed to preserve a traditional incandescent appearance while adding LED benefits. The bulbs turn on instantly and reach full brightness according to the listed product information.
Unlike the miniature wedge options, this product is not tied to a specified 10–30V low-voltage range in the supplied data. That makes it potentially useful in standard sign or cabinet fixtures, but it also means the buyer must verify the fixture's voltage and socket before ordering. The E26 base should be checked against the housing, especially where space around the bulb is limited.
This is a strong choice for a household with several compatible signs, display cabinets, or decorative fixtures because ten bulbs are included in one package. It is less tailored to a transformer-powered house-number fixture using 193 or 194 wedge bulbs. Its chief advantage is convenient bulk replacement combined with LED efficiency, while its chief requirement is careful socket and voltage confirmation.
Ten Bulbs Simplify Maintenance
A ten-count package is useful for multiple signs, string-light installations, or cabinets. It reduces the need to order individual replacement bulbs and provides spares for future failures.
Decorative Shape Meets LED Convenience
The S11 format retains a familiar accent-bulb appearance, while the LED source provides instant illumination. The listed suitability for signs, outdoor-rated wall fixtures, and enclosed fixtures broadens its possible address-sign uses where an E26 socket is present.
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6. Westinghouse White S11 LED – Low-Watt Warm-White Sign Lighting
Westinghouse White S11 LED
1-watt LED consumption
E26 medium screw base
80-lumen warm output
2700K color temperature
The Westinghouse Lighting 5511200 1 Watt (10 Watt Equivalent) S11 White LED Light Bulb, Medium Base is an efficient option for specialty fixtures with an E26 socket. It carries a 4.5 rating and is marketed for signs, string lights, and cabinet lights, making it relevant to address signs that use medium-base accent bulbs.
Pros
- Very low power consumption
- Warm 2700K appearance
- Damp-location approved
- Suitable for enclosed fixtures
- 15,000-hour rated life
Cons
- Single-bulb purchase
- Only 80 lumens of output
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The bulb consumes 1 watt while producing 80 lumens of warm white light at 2700K. It reaches full brightness instantly and has an average rated life of 15,000 hours. Those characteristics make it a long-lasting alternative to the 11-watt incandescent sign bulb represented elsewhere in this guide.
It is damp-location approved for outdoor-rated and enclosed fixtures, an important qualification for exterior sign installations. Still, the housing itself must be suitable for outdoor exposure, and the socket and line voltage need to match. Damp-location approval does not make an incompatible fixture safe to use.
The main limitation is brightness. At 80 lumens, it provides visible accent illumination rather than the strong output of a conventional incandescent sign lamp. It is best for a small decorative plaque or a fixture designed around low-power accent lighting. Its long rated life, warm appearance, and suitability for enclosed outdoor-rated fixtures make it a solid specialty replacement.
Exceptional Rated Longevity
The stated 15,000-hour average rated life reduces the likelihood of frequent replacement. That is particularly useful in elevated, exterior, or enclosed address fixtures where changing a bulb can be inconvenient.
Warm Light Without High Consumption
The 2700K output offers a soft residential appearance, and the one-watt consumption is substantially lower than the incandescent alternatives listed here. The 80-lumen output remains suitable for accent visibility rather than general room lighting.
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7. Westinghouse Clear S11 Four-Pack – Clear Multi-Bulb Sign Upgrade
Westinghouse Clear S11 Four-Pack
1-watt LED consumption
E26 medium screw base
80-lumen warm output
Four-bulb package
The Westinghouse Lighting 5511320 1 Watt (10 Watt Equivalent) S11 Clear LED Light Bulb, Medium Base, 4 Pack provides a clear-finish alternative to the frosted S11 LED. It has a 4.4 rating and includes four matching bulbs for signs, string lights, cabinets, and compatible specialty fixtures.
Pros
- Four matching replacement bulbs
- Clear decorative bulb finish
- Damp-location approved
- Long 15,000-hour rated life
- Instant full brightness
Cons
- Lower output than traditional lamps
- Medium base limits compatibility
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Each bulb uses 1 watt and produces 80 lumens of 2700K warm white light. The clear glass can support a more decorative, traditional visual than a heavily diffused bulb, depending on the sign design. Like the white Westinghouse S11, it turns on instantly and carries a 15,000-hour average rated life.
Damp-location approval makes these bulbs suitable for outdoor-rated and enclosed fixtures. The fixture must still be approved for the location, and the medium E26 base must physically fit. Address plaques with miniature wedge sockets are not candidates merely because both products are described as useful for signs.
The four-pack is more practical than a single-bulb purchase for a sign with several lamps or for a homeowner who wants matching spares. Its main compromise is the 80-lumen output, which is lower than a traditional incandescent sign bulb. It is best for accent lighting where energy efficiency, long life, and a clear decorative appearance are priorities.
Four Matching Bulbs Improve Consistency
Using matching bulbs in a multi-position sign can provide consistent illumination and appearance. The four-count format also leaves replacements available if one bulb reaches the end of its rated life.
Clear Finish for Decorative Fixtures
The clear S11 envelope suits signs and displays where visible filament-style geometry is part of the design. It pairs the familiar decorative look with a long-rated LED source.
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8. CEC Industries 1487 Bulbs – Specialized Ten-Bulb Low-Voltage Pack
CEC Industries 1487 Bulbs
14-volt operating system
2.8-watt power consumption
E10 screw base
Ten-bulb box
The CEC Industries #1487 Bulbs, 14 V, 2.8 W, E10 Base, T-3.25 Shape (Box of 10) is a narrowly specified replacement bulb sold in a box of ten. Its 4.5 rating is solid, but the supplied product information is limited to the manufacturer and the bulb's core electrical and physical identifiers.
Pros
- Ten bulbs in one box
- Precise 14-volt specification
- Compact T-3.25 shape
- Simple E10 screw base
Cons
- Limited application details
- Does not match wedge-base models
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The key specifications are a 14-volt operating system, 2.8-watt consumption, E10 screw base, and T-3.25 shape. Those details are important because the bulb is not a universal address-sign replacement. A buyer must find an existing lamp or fixture specification that matches all four characteristics rather than relying on the general shape alone.
The ten-bulb quantity is the most notable practical advantage. It supports multiple replacement positions and provides a useful reserve for low-voltage equipment. However, the data does not explicitly list illuminated address plaques, so this product is best understood as a specialized bulb that may suit a sign only when the fixture was designed around the #1487 format.
Compared with broad-range 10–30V address bulbs, the CEC product offers less voltage flexibility. Its appeal instead lies in an exact replacement for equipment requiring a 14V E10 T-3.25 lamp. Confirm the base, voltage, wattage, physical dimensions, and fixture requirements before purchase, and do not substitute it into a 193/194 wedge socket or a 110–130V E26 fixture.
Exact Specifications Matter
The 14V rating and E10 screw base distinguish this lamp from nearly every other product in the guide. Exact matching reduces the risk of electrical incompatibility when replacing a known #1487 bulb.
Useful Quantity for Specialized Equipment
A ten-bulb box is valuable when several compatible fixtures need the same lamp or when replacement stock is important. The compact T-3.25 format may suit equipment designed around that precise shape.
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9. LED Address Sign Replacement Kit – Bayonet-Socket Address Upgrade
LED Address Sign Replacement Kit
10–30V AC/DC operation
Ba9S bayonet base
Pure white illumination
Two-bulb package
The Lighted Address Sign Premium LED Replacement Bulb Kit is explicitly designed to replace original filament-style bulbs in illuminated address plaques. Its 3.7 rating is the lowest in the group, but the product's narrow specialization is still important for anyone whose plaque uses miniature bayonet sockets.
Pros
- Purpose-built address-plaque retrofit
- Supports AC and DC supplies
- Clear Ba9S base specification
- Pure white LED output
Cons
- Lowest customer rating
- Only compatible with Ba9S sockets
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The kit contains two Ba9S miniature bayonet LED bulbs and supports 10–30V AC/DC power. Those clear specifications make it a plausible direct retrofit for compatible low-voltage address signs. The pure-white output is designed to create crisp visibility against the sign's translucent face.
Its limited 3.7 rating suggests that compatibility may be the critical issue for some buyers. A Ba9S bulb cannot be installed in a 193/194 miniature wedge socket, even though both are small low-voltage lamp formats. The fixture's existing base, voltage, number of lamp positions, and dimming arrangement should all be checked.
This kit is best for a homeowner who can positively identify a Ba9S socket and wants a direct LED conversion without replacing the sign or transformer. It is less versatile than the 193/194 products in this guide but more purpose-specific. Buyers should compare the old bulb's physical base and electrical rating rather than choosing solely from the address-sign wording in the listing.
Direct Retrofit for Bayonet Fixtures
The specified Ba9S base gives the kit a clear installation target. It is designed to replace filament lamps in address plaques without changing to a different socket format.
Pure White for Clear Signage
Pure-white output is intended to maintain strong contrast and legibility through a translucent plaque. The effect will depend on the sign's diffuser, lettering, and ambient light.
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10. Westinghouse Clear Sign Bulb – Traditional Incandescent Sign Lighting
Westinghouse Clear Sign Bulb
11-watt incandescent source
Clear 11S14/130 format
Standard screw base
2,500-hour rated life
The Westinghouse Lighting 03540 Corp 11-watt Sign Light Bulb, Clear is a traditional incandescent option for fixtures designed around the 11S14/130 format. It holds a 4.5 rating and may suit a traditional sign, display case, or illuminated address housing that explicitly calls for an incandescent lamp.
Pros
- Traditional clear sign appearance
- Standard screw-base installation
- Familiar incandescent output
- Simple replacement format
Cons
- Highest listed power consumption
- Only 2,500-hour rated life
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The bulb is clear, rated at 11 watts, and uses a standard screw base. Its stated average rated life is 2,500 hours. Those are important distinctions from the LED choices: this product preserves a familiar incandescent appearance but operates at higher consumption and requires more frequent replacement than products rated for 15,000 hours.
Its straightforward base may make installation easier in a decorative fixture that accepts standard bulbs. However, the 11S14/130 envelope and physical clearance still need to fit the sign housing, and the fixture's voltage must be compatible. A standard base does not make every fixture suitable for every incandescent lamp.
The best buyer is someone maintaining a legacy sign that requires this exact clear incandescent format and prioritizes traditional appearance over energy efficiency or service life. For a new low-voltage LED conversion, the 193/194 or Ba9S replacements offer more relevant options. This bulb remains a functional specialty replacement, but modernization may be preferable where the fixture permits it.
Traditional Clear-Bulb Appearance
The clear 11S14/130 format preserves the appearance of older sign lighting. It is a logical replacement for a fixture originally designed around a conventional incandescent sign lamp.
Frequent Replacement May Be Necessary
At a stated 2,500-hour average rated life, this bulb will generally need attention sooner than the LED alternatives. Buyers should consider the inconvenience of servicing elevated or enclosed fixtures before choosing it.
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Buying Guide – How to Choose the Best Light Bulb for Address Sign
The correct replacement begins with the fixture rather than appearance. Voltage, base, wattage, and environmental requirements determine safe compatibility, while dimming, color, brightness, and pack size help refine the choice.
Confirm the Socket Base
The base must physically and electrically match the socket. Common options in this guide include miniature wedge sockets for 193 and 194 bulbs, Ba9S miniature bayonet sockets, E26 medium screw bases, and the smaller E10 screw base used by the CEC Industries lamp. A bulb that looks similar in a product photograph may have push contacts, bayonet pins, or a different thread size, so compare the original lamp and the fixture opening rather than relying on diameter alone.
When uncertain, remove the old bulb only if the fixture is safe to access, note every marking printed on it, and check the socket itself. Do not force a bulb into a different base, and do not use a wedge bulb in a bayonet socket or vice versa.
Match the Fixture Voltage
Address-sign lighting systems often use a transformer because the visible bulbs operate at a lower voltage than household electricity. The Keiurot 193/194 bulbs support a broad 10–30V AC/DC range, while the CEC Industries #1487 is specified for 14V. E26-based products such as the Mandala Crafts G40 and Westinghouse S11 lamps belong in fixtures operating at compatible mains voltage, with the Mandala model listed for 110–130V.
Confirm the transformer's output and whether it supplies AC or DC. Even when a voltage falls within a stated range, a fixture's dimmer or transformer must also be compatible. Replacing a low-voltage lamp with a standard household bulb can damage the system, while using an incompatible mains lamp in a low-voltage fixture may prevent it from working or create a safety concern.
Check Wattage and Electrical Limits
Voltage alone does not establish compatibility. The replacement should also stay within the fixture's design, and any dimming system must tolerate the bulb's electrical characteristics. Products range from the one-watt Westinghouse S11 LEDs to the 7.5-watt Feit and Mandala options, as well as the 11-watt Westinghouse incandescent. The address-specific Keiurot products do not provide a conventional wattage figure in the supplied information, so their listed voltage and fixture fit should be the deciding criteria.
Do not assume a brighter bulb is an improvement. A sign designed for a soft accent may perform better with lower output, while a large transparent plaque may need adequate spread across several lamps. Follow the fixture manufacturer's recommendations whenever they are available.
Choose the Correct Color
Color changes the atmosphere and readability of an address sign. The Keiurot four-pack is described as warm white, and the Westinghouse S11 LEDs produce warm white light at 2700K. The Ba9S replacement kit offers pure white, while the Feit S11 product uses a soft-white finish. The Mandala G40 and Westinghouse 03540 use clear glass, which can create a more traditional incandescent appearance.
Choose warm light for a softer residential look and pure or cool-looking light when crisp visibility is the priority. Actual appearance can change through a colored or frosted sign face, so consider the complete fixture rather than the bulb alone.
Assess Light Output
The specialty bulbs listed here are not designed to illuminate an entire room. The Mandala G40 produces approximately 40 lumens, while the Westinghouse S11 LEDs provide 80 lumens. The Keiurot address bulbs are described more generally as bright and soft. Output should therefore be evaluated in the context of sign size, diffuser material, ambient light, and the number of installed bulbs.
More lumens are not automatically better for address identification. Even illumination without glare usually matters more than a single intensely bright lamp. If a plaque is larger, multiple lower-output bulbs positioned around the sign may provide more consistent visibility.
Verify Dimmer Compatibility
Dimming can be valuable for decorative address lighting, particularly at night, but the bulb and control system must be compatible. The Keiurot 193/194 products are explicitly described as dimmable, while the other listings do not make the same claim. A fixture's existing dimmer may also have a minimum load requirement that affects whether an LED operates correctly.
If dimming is important, use a replacement explicitly listed for dimmable use and follow the transformer's instructions. If the bulb flickers, fails to turn off fully, or dims unevenly, stop using that combination and check the electrical specifications rather than assuming the bulb alone is at fault.
Consider Outdoor Suitability
An exterior address sign needs a bulb and housing that are both suitable for moisture and temperature exposure. The Westinghouse S11 LEDs are damp-location approved for outdoor-rated and enclosed fixtures, while the Keiurot products are described as having a waterproof design. The incandescent products are not presented with equivalent environmental claims in the supplied information.
Weather resistance begins with the fixture. A damp-location bulb should only be installed in a housing approved for that exposure, with seals and covers properly seated. A waterproof bulb cannot compensate for an open or improperly sealed sign enclosure.
Match Pack Size to Maintenance Needs
Pack quantity affects convenience rather than compatibility. Two-packs suit a single plaque or a small number of lamps, while four- and ten-bulb packages are useful for larger signs, multiple fixtures, and replacement stock. The Feit Electric and CEC Industries products each contain ten bulbs, while the Westinghouse clear S11 product includes four. The Keiurot listings provide two-bulb and four-bulb options.
Buying a modest quantity reduces excess when only one lamp needs service, but a small emergency reserve can be useful because a failed bulb may be difficult to reach. Consider the number of positions in the sign, how often you expect to service it, and whether matching bulbs are important for visual consistency.
How to Use and Care for Your Light Bulb for Address Sign
Begin by switching off the sign at its transformer or breaker and allowing the fixture to cool. Access the lamp compartment without exposing yourself to energized wiring, remove the old bulb, and compare its printed number, base, voltage, and wattage with the replacement. Install the new bulb in the correct socket without forcing it, and restore power only after the cover is properly seated.
For LED replacements in dimmable low-voltage systems, test the sign at full output and then at lower levels to check for flicker, uneven illumination, or a bulb that will not extinguish. If problems occur, verify the bulb specification, transformer compatibility, and dimmer's supported load rather than continuing to operate the fixture.
Keep the lens or diffuser clean, inspect gaskets for gaps or damage, and ensure that only bulbs approved for the fixture's damp or wet location are used. Replace bulbs before they fail when practical, and store spare bulbs in a dry place. Do not exceed the fixture's rating, and consult a qualified electrician if the sign shows damaged wiring, corrosion, heat discoloration, or a transformer that behaves erratically.
Frequently Asked Questions
What bulb number is commonly used in an illuminated house-number sign?
The 193 and 194 bulb numbers are frequently associated with miniature wedge low-voltage fixtures, while 12V, 16V, 18V, 24V, and 28V systems are common in residential sign installations. Other signs use Ba9S bayonet bulbs or standard screw-base lamps. Always identify the socket and voltage rather than relying on the fixture's appearance.
Can I replace an incandescent address-sign bulb with LED?
Often yes, but only if the LED matches the base, voltage, wattage limits, and any dimming system. A low-voltage LED intended for a 10–30V system is not interchangeable with a 120V E26 lamp. A purpose-built LED can reduce consumption and extend service life while preserving the original transformer and sign housing.
How do I know whether my sign uses a wedge or bayonet bulb?
A wedge bulb usually has two flat contact pins along the bottom, while a Ba9S bayonet bulb has small side pins that twist into the socket. A screw-base bulb has a continuous threaded shell. The original bulb number, socket markings, or the fixture documentation are the most reliable sources of identification.
Do address-sign LED bulbs work with dimmers?
Only when both the bulb and the dimming system are compatible. The Keiurot 193/194 products in this guide are explicitly described as dimmable. Flickering, a bulb that stays partially on, or uneven brightness can indicate an incompatible dimmer, insufficient load, or a wiring issue and should be investigated.
Is a higher-wattage bulb better for an address sign?
Not necessarily. Address signs generally need visible accent illumination rather than the highest possible brightness. Excess output can create glare, and using a bulb above the fixture's rating may cause heat, early failure, or damage. Match the replacement to the fixture's design and follow its voltage, base, and wattage requirements.
Can I use these bulbs in an outdoor address sign?
The bulb must be approved for the fixture's damp or wet location, and the housing must provide equivalent protection. Some listed LEDs are damp-location approved or described as waterproof, but those claims do not make an unsealed fixture suitable for exposure. Check both the bulb specification and the sign's weather rating.
Why does my new LED address bulb flicker?
Flickering can result from an incompatible dimmer, a transformer that does not support the LED's load, poor socket contact, loose wiring, or a mismatched bulb. Verify the voltage and base first, then test with the system's intended control arrangement. If the issue persists, have the transformer and connections inspected by a qualified professional.
Should I replace all bulbs in an address sign at once?
Replacing all lamps with the same model can improve color consistency and simplify future maintenance, especially if the existing bulbs are at similar stages of failure. It is not necessary if only one position has failed, provided the replacement matches the original base, voltage, and output requirements.
Final Thoughts on Choosing the Best Light Bulb for Address Sign
The Keiurot 193/194 four-pack is the strongest overall choice because it combines the highest listed rating with warm-white output, dimmability, broad 10–30V AC/DC compatibility, and four bulbs. The two-pack version offers the same core electrical flexibility in a smaller quantity, while the Ba9S kit is the more direct option for a plaque with miniature bayonet sockets.
Prioritize the socket and voltage before considering brightness or color. Miniature wedge signs need a compatible 193/194-style replacement, Ba9S fixtures require the correct bayonet base, and E26 or E10 lamps should be selected only for fixtures designed around those bases. Once compatibility is established, dimming, warm versus pure white output, outdoor suitability, and pack quantity can determine the best fit.
Remember that product specifications, availability, and prices can change. Before purchasing, compare the current listing with the socket and voltage of the existing sign, review any manufacturer instructions, and verify that the complete fixture is suitable for the installation environment.