SATCO Lighting S11427 8.5W, A19 LED, Dusk to Dawn With PhotoCell, 5000K, Medium Base, 200 degree Beam Angle, 120V

The photocell is built into the lamp. The S11427 is a dusk to dawn A19 with an integral photocell, so it senses ambient light and switches itself on at dark and off at daylight with no external sensor, timer, or control wiring. Leave the switch feeding the fixture on and the bulb handles the rest. Note that means it will not respond to a wall switch the way an ordinary lamp does, and it is not dimmable, so do not put it on a dimmer circuit.

Yes, within limits. The S11427 is rated for indoor and outdoor use at a damp location rating, which covers a covered porch, a soffit, an enclosed coach light, or a breezeway. A damp rating does not cover direct rain or spray, so an open fixture where water hits the lamp is the wrong application. It is also enclosed rated, so a sealed lantern or a jelly jar is fine, which is where a lot of LED lamps fail early from trapped heat.

It replaces a standard 60 watt incandescent A19 and puts out 800 lumens on 8.5 watts. Same screw in medium base, same A19 shape, so it drops into the existing socket. At 0.071 amps on 120 volts the load per lamp is small enough that a property manager relamping a whole exterior can put many more of these on the same circuit than the 60W lamps they replace.

No. At 5000K this is a daylight white, distinctly blue-white next to the 2700K or 3000K warm lamps typical of residential and hospitality fixtures. On a shared facade or a row of matching lanterns the mismatch is obvious. The color temperature is fixed, not selectable, so there is no way to tune it down. Use 5000K where you want security-grade visibility (parking, service doors, stairwells) and pick a warmer lamp where the fixture sits next to existing warm ones.

Not on a dimmer. The S11427 is non dimmable, and a dimmer will cause flicker, buzz, or premature failure. It is also the wrong lamp for any switched control scheme in general: the built in photocell expects constant power at the socket, so a sensor or timer that cuts power will fight it. If the circuit already has dimming or occupancy control, use a plain non photocell A19 and let the control do the switching.

200 degrees is a wide, omnidirectional style spread, so light goes out and back past the horizontal rather than straight down in a cone. That suits open lanterns, jelly jars, porch ceilings, and post tops where you want general wash rather than a pool. Burning position is universal, so it can be mounted base up, base down, or horizontal without affecting operation. One thing to watch on a dusk to dawn lamp: the photocell needs to see ambient light, so a fully shrouded or opaque fixture body can keep it from sensing daylight properly.

Rated average life is 15,000 hours. Running dusk to dawn averages roughly 12 hours a night, which works out to somewhere near three and a half years of nightly operation before rated life. For an MRO or property maintenance schedule that puts a multi-unit exterior relamp on a multi-year cycle instead of the annual visit incandescent porch lamps demand.

CRI is 90, which is high for a security lamp and means color rendering good enough that clothing and vehicle colors read correctly under it, which matters for camera footage and for tenant reports. Paired with 5000K daylight white and 800 lumens, it is aimed squarely at entry doors, walkways, and service areas where you want detail rather than mood.

Yes, it is an enclosed rated lamp, so a sealed fixture is an approved application. That is the specific failure mode for standard LED A19s: trapped heat cooks the driver and the lamp dies well short of rated life. The S11427 uses a high heat conductive plastic housing with a polycarbonate lens to handle that. This is the reason to spec it over a general purpose LED for coach lights and jelly jars.

No. It is a 120 volt, 60 hertz lamp only. On a 277 volt commercial lighting circuit, common in warehouses, parking structures, and larger institutional buildings, it will fail immediately. Check the fixture voltage before ordering for a commercial exterior; a lot of building exteriors run 277V while the tenant-side porch and entry circuits run 120V.

Not a three-way lamp, so it will not step through levels in a three-way socket, and it is single output only. It ships one way: a white housing with a white lens finish. There is no other color or finish option on it.

No. The S11427 is not DLC approved, so it will not qualify under a utility program that requires a DesignLights Consortium listing. If you are building a rebate submission for a multi-family or institutional relamp, this lamp should be budgeted at full cost rather than counted toward that incentive.