SATCO Lighting S9857 9W LED PL 2-Pin, 5000K, 900 Lumens, G24d Base, 50000 Avg Rated Hours, Type A, Ballast dependent

No. The S9857 is a Type A ballast-dependent lamp, so it runs off the existing CFL ballast already in the fixture. You pull the old 2-pin CFL and plug this in, no rewiring and no ballast bypass. The trade-off is that the lamp only works as long as that ballast works; if the ballast fails, the lamp goes dark until it is replaced. If you would rather be rid of the ballast entirely, you need a Type B (ballast bypass) PL lamp instead, not this one.

No. The S9857 has a G24d 2-pin base and will only seat in a 2-pin G24d socket. Four-pin G24q sockets are a different pin arrangement and are typically fed by an electronic ballast, so the lamp neither fits nor is matched to that circuit. Count the pins on the lamp you are pulling out: two pins, this is the right family; four pins, you need a 4-pin PL lamp.

Enclosed fixtures are fine, the S9857 is an enclosed rated lamp, so a drum, lens, or gasketed can will not void it on heat grounds. It carries a damp location rating, which covers bathrooms, covered exterior walkways, and parking garage soffits. Damp is not wet, so keep it out of anything exposed to direct rain or hose spray.

Yes. The burning position for this 9W LED PL lamp is horizontal. That suits the usual downlight, sconce, and stairwell applications where the PL socket lays the lamp on its side, but if your fixture holds the lamp base-up or base-down vertically, look for a lamp rated for that position rather than forcing this one.

No. The S9857 is non-dimmable. On a dimmer circuit expect flicker, buzz, or no start at all, so use it only on full-on switched circuits. It is also not a three-way lamp and the color temperature is fixed at 5000K, with no field-selectable CCT.

5000K is a crisp daylight white, noticeably bluer and brighter looking than the 2700K or 3500K warm CFLs common in older PL fixtures. Output is 900 lumens at 9 watts with a 120 degree beam spread and an 82 CRI, through a frosted lens that keeps the diodes from reading as hot spots. If you are relamping one stairwell or garage at a time, mix 5000K with warm existing lamps and the difference is obvious from the parking lot, so plan to do a full run at once.

The S9857 is not DLC approved, so it will not qualify under rebate programs that require a DesignLights Consortium listing. It is noted as lawful for sale in California if you are specifying for a West Coast portfolio.

It is FCC compliant, so radio interference with nearby electronics is not an expected issue. The lamp operates at 60Hz, which matches standard North American line power feeding the fixture ballast.

The housing is white with an aluminum and plastic base, and the lens is frosted. In an open-bottom downlight or a clear-glass sconce, the white body and frosted lens read closer to a traditional CFL PL than a bare-diode lamp would.