SATCO Lighting S8589 6.5W, LED MR16 LED, 3000K, 40 degree Beam Angle, GU10 Base, 120V

The S8589 uses a GU10 twist-lock base and runs on 120V line voltage, so it drops straight into GU10 sockets with no transformer. If your fixtures are the 12V MR16 type with two straight pins (GU5.3/bi-pin), this lamp will not fit, and you need a 12V MR16 lamp instead.

No separate driver or transformer is needed. Driver electronics are built into the lamp and it wires to 120V line voltage through the GU10 base, so it goes straight into a line-voltage track head or recessed trim. If the fixture currently has a 12V magnetic or electronic transformer feeding a bi-pin MR16, that fixture is not a candidate for this lamp.

Yes, the 6.5W S8589 is a dimmable lamp. On a line-voltage 120V GU10 circuit it works with standard forward-phase dimmers rated for LED loads. Note that dimming a single 6.5W lamp can fall below the minimum load of some older dimmers, so grouping several on one dimmer gives smoother low-end performance.

450 lumens from 6.5 watts. That puts it in the range of a 50W halogen MR16 for usable output on a 40 degree flood pattern, at roughly an eighth of the wattage, which is why property managers swap these into corridor and lobby downlights to cut load without changing fixtures.

3000K is warm white, a soft yellow-white tone common in residential, hotel, and hospitality interiors. It is noticeably warmer than 4000K neutral white and cooler than 2700K incandescent-style light. If your existing lamps are 2700K halogen, this will read slightly cleaner and whiter; mixing 3000K and 4000K in the same room or corridor will be visible, so standardize on one.

CRI is 90+, which is the threshold specifiers call for in retail displays, galleries, hotel guest rooms, and anywhere skin tone or merchandise color matters. Standard LED lamps in the 80 CRI range will show muted reds by comparison, so the S8589 is the one to spec when color fidelity is part of the job.

The S8589 is sold as a single configuration: 6.5W, 3000K, 40 degree beam, GU10 base, 120V, with a white finish. For a different beam spread or color temperature you need a different Satco MR16 part number rather than an option on this one.

Each lamp weighs 0.08 lb, so even a full-building relamp of a few hundred GU10 downlights stays light enough to handle as a single parcel shipment rather than freight.