SATCO Lighting S11550 5.5W LED PL 2-PIN Dual Mode, 2700K, 500 Lumens, GX23 Base, Type A/B Ballast Dependent or Ballast Bypass

Yes. The S11550 is a dual mode lamp: it runs on an existing compatible ballast (Type A) or, once the ballast is removed and the sockets are wired to line voltage, direct on 120-277V (Type B ballast bypass). That gives a property manager a same-day swap on a working ballast, and an electrician the option to bypass the ballast later when it fails rather than buying a different lamp.

No. The S11550 is not dimmable, so it should be wired to a plain switched circuit. On an existing dimmed circuit expect flicker or no start at all, and either the dimmer gets replaced with a standard switch or you need a different lamp for that fixture.

It is an open rated lamp, so it belongs in fixtures that are open or vented, not sealed enclosures. Location rating is damp and indoor, which covers bathrooms, covered walkways and laundry rooms, but not wet locations or direct exposure. Burning position is universal, so base-up sconces, horizontal downlights and vertical wall fixtures are all fine.

At 5.5 watts it puts out 500 lumens with a 45W incandescent equivalence. In practice it is the LED stand-in for the 2-pin GX23 CFL it replaces, and it draws 0.046-0.020A depending on where it sits in the 120-277V range. Rated life is 50,000 hours, so in a stairwell or corridor burning around the clock you are looking at a lamp you are not back on a ladder for.

Color temperature is fixed at 2700K, the warm white that matches standard soft-white CFL and incandescent lamps, and it is not a selectable-CCT lamp. CRI is 80. If the other fixtures on the floor are 3000K or 3500K, this one will read visibly warmer next to them, so standardize a whole area rather than mixing.

Yes, in ballast bypass (Type B) wiring it accepts 120-277V at 50/60Hz, which covers both the 120V circuits in residential and light commercial work and the 277V circuits common in commercial buildings. That single lamp covers both, so an MRO buyer can stock one part number across mixed-voltage buildings.

On Type A operation, no wiring changes: maintenance staff pull the old CFL and drop this in, provided the existing ballast is compatible. Type B ballast bypass is different work. The ballast comes out and the sockets get wired to line voltage at 120-277V, which is licensed electrician work in most jurisdictions and means the fixture is no longer safe for a plain CFL afterward. Label the fixture if you bypass.

The S11550 throws a 120 degree beam through a frosted glass lens, so it is a general-illumination lamp, not a spot. In a wall sconce or a small ceiling can it fills the fixture and washes evenly rather than punching a tight pool of light. If you need directional accent throw, a PL lamp is the wrong tool.

No. The S11550 is not DLC listed, so it will not qualify on a DesignLights Consortium rebate program. If a utility incentive is driving the retrofit, the lamp needs to be checked against that program's qualified products list before the order goes in.

Satco Lighting model S11550, a 5.5W LED PL 2-pin dual mode lamp, 2700K, 500 lumens, GX23 base, sold with a frost lens and white housing. That MPN is what you order against, and it is one configuration, not a family with finish or color options.