SATCO Lighting S9865 9W LED PL 2-Pin, 5000K, 900 Lumens, G24d Base, 50000 Avg Rated Hours, Type A, Ballast dependent

No, and in fact you can't. The S9865 is a Type A, ballast dependent lamp, meaning it runs off the existing CFL ballast already in the fixture. Pull the old 2-pin CFL, drop this in, done. If the ballast fails later, the lamp stops working until the ballast is replaced or you switch to a ballast bypass (Type B) lamp.

No. The S9865 has a G24d 2-pin base and only seats in a G24d socket. Four-pin fixtures use G24q bases and are wired to a different ballast type, so the pins won't engage. Check the old lamp: two pins means this one works, four pins means you need a G24q lamp instead.

No. The S9865 is not dimmable. On a dimming circuit expect flicker, buzz, or no start at all. For stairwells and corridors where you want level control, use an occupancy sensor or separate switching rather than a dimmer on this lamp.

Yes on both counts. It's an enclosed rated lamp, so sealed downlights and wall sconces with a closed lens are fine, and 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 anywhere exposed to direct rain or spray.

It's the LED swap for a standard 2-pin PL CFL, drawing 9 watts and putting out 900 lumens. Satco rates its light output as equivalent to a 40W incandescent. Because it runs on the existing ballast, match it to the socket type (G24d) rather than trying to match the old lamp's wattage exactly.

Yes. Burning position is base up or down, so recessed cans, surface drums, and sconces all work without derating. That matters with LED PL lamps because the driver sits in the base and some competing lamps restrict orientation for heat reasons.

Yes, noticeably. At 5000K the S9865 reads as a crisp daylight white, much cooler than the 3000K or 3500K most office and lobby spaces are lamped at. It's not color selectable, so there's no way to dial it down. If you're relamping a whole floor, run it everywhere in that space or the mismatch will be obvious. CRI is 82, which is standard for commercial PL.

Rated at 50,000 average hours. Running roughly 12 hours a day in a corridor or garage that's on the order of a decade of service. The catch on a Type A lamp is that the existing ballast becomes the weak link, since the lamp depends on it, so factor ballast age into a large relamp.

No. It is not DLC listed, so it won't qualify under utility programs that require a DesignLights Consortium listing. It is FCC compliant for electromagnetic interference, and marked lawful for sale in California.

A 120 degree beam through a frosted lens, so it's a wide, diffused wash rather than a spot. That suits downlights, wall sconces, and elevator lobby fixtures where you want even coverage with no hard hot spot. It won't work as an accent or spotlight source.

White housing with a frosted lens over the LED array, in an aluminum and plastic body. In an open sconce or a fixture with a clear diffuser it reads as a clean white lamp, not a bare CFL twin tube. The frost also cuts glare from the diodes when the lamp is visible.