SATCO Lighting S11543 12W, LED, 4000K, GU24 Base, 120V

No. The S11543 is a non-dimmable lamp. Put it on a dimmer circuit and you risk flicker, buzz, or early failure. If the fixture is on a dimmer, either swap the switch for a standard toggle or spec a dimmable GU24 lamp instead.

Yes, it is an enclosed rated lamp, so a closed-globe or drum fixture where heat builds up is a valid application. It is also rated for damp locations, which covers a covered porch, bath, or laundry ceiling. It is not a wet location lamp, so keep it out of direct exposure.

The S11543 puts out 1100 lumens on 12 watts, which Satco rates as a 75W incandescent equivalent. For a property manager relamping a building, that is a like-for-like brightness swap at roughly a sixth of the draw, 0.100A at 120V.

Yes, that is the common swap. Any fixture with a GU24 twist-lock socket takes this lamp directly, no wiring or fixture change. Two things to check first: the circuit must be line voltage 120V at 60Hz, and the fixture cannot be on a dimmer, since this lamp is non-dimmable.

4000K is neutral white, the usual pick for corridors, laundry rooms, garages, kitchens, and back-of-house where you want a clean, task-oriented light. For apartment living spaces and hospitality guest rooms, most specs run 2700K or 3000K instead. Note this lamp is fixed at 4000K, it is not a CCT-selectable model, so pick the color before you order for the whole building.

Burning position is universal, so base-up, base-down, or horizontal all work. That matters on GU24 retrofits because the same lamp often has to serve ceiling cans, wall sconces, and flush mounts across one property.

It is an omnidirectional-style spread at 100 degrees with a frosted plastic lens, so the output is diffused rather than a tight spot. That suits general ambient lighting in a flush mount or ceiling fixture. If you need a narrow beam for accent or display work, a GU24 lamp like this is the wrong tool.

CRI is 90+, which is the threshold most retail, healthcare, and hospitality specs call for when color accuracy matters. Many commodity LED lamps sit at 80 CRI, so this is a step up for spaces where skin tones and merchandise color need to read correctly.

The S11543 is not DLC approved, so it will not clear rebate programs that require a DLC listing. It is FCC compliant for electromagnetic interference. If a utility incentive is driving the job, confirm the program accepts non-DLC lamps before you commit to a quantity.

Rated at 25,000 average hours. On a corridor running 12 hours a day that works out to roughly five and a half years between relamps, which is the number MRO buyers use to plan crew time rather than bulb cost.

It is a squat T3 shape with a white housing and a frosted lens, so it sits low and compact over the socket rather than rising like a spiral CFL. That profile is why it works in shallow flush mounts and small drum shades where a taller lamp would show below the trim.

Yes, Satco flags the S11543 as lawful for sale in California. GU24 sockets themselves are largely a product of California high-efficacy lighting rules, so a GU24 LED lamp is the expected replacement in those fixtures.