SATCO Lighting S29860 9W LED PL 4-Pin, 4000K, 1100 Lumens, G24q Base, 50000 Avg Rated Hours, Type A, Ballast dependent

The S29860 is a ballast dependent Type A lamp, so it runs off the existing compact fluorescent ballast in the fixture. Pull the old 4-pin CFL, drop this in, no rewiring. The catch is that the ballast has to still be good and compatible; when the ballast eventually fails, the lamp goes dark with it. If you would rather be done with ballasts entirely, you want a Type B (ballast bypass) PL lamp instead, which is wired direct to line voltage.

Enclosed rated, so a closed lens or drum fixture is fine, which is where a lot of LED PL lamps are not permitted. Location rating is Damp, so covered exterior soffits, bathrooms and garages are in scope. Damp is not wet: do not use it where the lamp is exposed to direct rain or hose-down.

Three things decide it. The socket has to be G24q 4-pin, not a 2-pin type. The fixture needs a working CFL ballast, since this is a Type A ballast dependent lamp. And the color of the existing lamps has to be 4000K, because this one is fixed at 4000K and cannot be dialed to match a warmer zone. Where all three hold, one part number covers the fleet, and enclosed and damp rated fixtures are both in scope.

Rated at 1100 lumens on 9 watts, with a 40W incandescent equivalent. In a 4-pin PL fixture that is the light level of the CFL it displaces, at a fraction of the draw. For a corridor or stairwell relamp the output is what most people notice; 1100 lumens per lamp in a two-lamp fixture puts 2200 into the space.

Burning position is base up or down, so a recessed CFL downlight, a vertical wall sconce, or a ceiling can all work. Beam spread is 120 degrees, which is a wide wash rather than a spot, so it fills a fixture reflector the way the CFL did instead of throwing a tight pool.

Fixed 4000K, not CCT selectable, so what you order is what you get. 4000K is neutral white, the usual pick for corridors, garages, back of house and commercial offices. If the rest of the building is on 3000K warm white, this lamp will read visibly cooler beside them, so match the whole zone rather than swapping one fixture. CRI is 82.

No. The S29860 is not a three-way lamp, and being ballast dependent it takes its drive from the existing CFL ballast, so dimming behavior is whatever that ballast does, not something the lamp controls. Treat it as a fixed-output relamp on a standard on/off switch. Operating frequency is 50/60Hz.

50,000 average rated hours. On a corridor or stairwell burning roughly 24/7 that is around 5.7 years of continuous operation before the lamp is due. The practical limit on a ballast dependent lamp is the ballast, not the lamp, so on very old fixtures plan for the ballast to be the next thing you touch.

White housing with a frosted lens over the LEDs. The frost diffuses the diodes so you do not see individual points of light through an open or clear fixture, which is the usual complaint when swapping a CFL for a bare LED PL. Lamp shape is PL, so it drops into the same footprint as the twin-tube it replaces.