SATCO Lighting S8533 9W LED PL 2-Pin, 4000K -1000 Lumens, G24d Base, 50000 Avg Rated Hours, Horizontal, Type B, Ballast Bypass

No. The S8533 is a Type B ballast bypass lamp, direct wire only on 100V-277V. The existing CFL ballast has to be removed or bypassed and line voltage wired straight to the sockets. If you drop it into a fixture that still has a working ballast, it will not run. That rewiring is electrician work, so budget for it on every fixture you convert.

The S8533 uses a G24d 2-pin base, so it seats in 2-pin CFL sockets only. A G24q 4-pin socket will not take it. Check the pins on the lamp you are pulling out: two pins means this one, four pins means you need a 4-pin lamp instead. Since it is a ballast bypass lamp, the socket also has to be wired to line voltage regardless of pin count.

Horizontal burning position is what this 9W PL lamp is built for. In a can or downlight where the socket points the lamp base-up or base-down, the light throw and heat path are not what the lamp is rated for; a vertical-burn PL lamp is the right call there. In troffers, wall packs, and stairwell fixtures where the lamp lies on its side, horizontal is exactly right.

Yes, it is an enclosed rated lamp, so a sealed or gasketed fixture is fine. Location rating is damp, which covers covered walkways, parking garages, bathrooms, and stairwells. It is not rated for wet locations, so leave direct-rain exposure to a wet-rated lamp.

No. This 9W PL lamp is non-dimmable. On a dimmer circuit expect flicker, buzz, or no start at all, and the dimmer itself can be damaged. If the fixture is on a dimmed circuit, either replace the dimmer with a standard switch or specify a dimmable lamp. Same answer for 3-way sockets: it is not a three-way lamp.

1000 lumens from 9 watts, with a 40W incandescent equivalence rating. Beam spread is 120 degrees, so it washes broadly rather than throwing a tight cone, which suits ceiling and wall-mounted fixtures with a diffuser. The lens is frosted, so you get a diffused output rather than visible LED dots through a clear cover.

The S8533 is fixed at 4000K, a neutral white that reads cooler than the 3000K warm white common in residential and hospitality spaces and warmer than 5000K daylight. It is not CCT selectable, so there is no field switch to match a different corridor. If your building is standardized on 3000K or 5000K, order that color temperature instead rather than mixing on the same run of fixtures. CRI is 82, typical for commercial corridor, garage, and back-of-house work.

Yes. Direct wire range is 100V-277V at 50/60Hz, so the same lamp works on 120V residential circuits and 277V commercial lighting branch circuits. Current draw is 0.075-0.032A across that range, which is why one part number covers both. That single-part coverage is useful if you are standardizing lamp stock across buildings on different service voltages.

Type B, which is what the S8533 is, means you rewire the fixture to line voltage and remove the ballast from the picture. More labor up front, but nothing left to fail later and no ballast compatibility list to check. Type A plug-and-play runs on the existing ballast and installs in seconds, at the cost of still depending on that ballast. For a fleet retrofit where you are already opening the fixture, or where ballasts are aging out, Type B is the one that stops the recurring maintenance call. For a one-off lamp swap by non-electrical staff, Type A is easier.

No, it is not DLC listed, so it will not qualify under rebate programs that require DLC. If your utility incentive hinges on DLC, specify a DLC-listed lamp instead. It also is not Build America, Buy America compliant, which matters on federally funded work; for those jobs you need a BABA-compliant part. It is FCC compliant.

50,000 average rated hours. On a garage or corridor fixture burning 24/7 that is roughly 5.7 years of continuous run; on a 12-hour daily schedule it stretches past 11 years. That is the argument for spending the electrician time on the ballast bypass once: you are not going back into that fixture on a CFL replacement cycle.

Satco Lighting model S8533 is the full part number, and there is nothing else to specify. One configuration only: 9W, 4000K, frost lens, G24d 2-pin, ballast bypass. No finish choice, no color temperature choice, no dimmable variant under this number. If you need a different wattage or a 4-pin base, that is a different Satco part number entirely.