SATCO Lighting S8641 8W, LED MR16, 3000K, 40 degree beam spread, GU5.3 Base, 12V AC/DC

It uses a GU5.3 bi-pin base, the same two-pin base found on standard 12V MR16 halogen lamps. If your fixtures currently run 12V halogen MR16s on a magnetic or electronic transformer, the pins drop straight in.

Forty degrees is a flood pattern. It is the one to use for general downlighting, wall washing, and covering merchandise or seating areas with even light from recessed or track heads. For tight accenting of a painting or a single display piece, a narrow spot in the 10 to 25 degree range puts more punch on the object and less spill around it.

At 3000K the light reads as warm white, a touch crisper and less yellow than a 2700K incandescent-look lamp and clearly warmer than the neutral 4000K. It is the common choice in hospitality, retail, and multi-family common areas. If you are relamping a room to match, keep every lamp in that space at the same Kelvin value or the mismatch shows on the ceiling.

The S8641 draws 8 watts at 12V. Swapping in place of the 35W and 50W halogen MR16s commonly used in the same low-voltage heads cuts the load per lamp substantially, which also matters for transformer sizing on multi-head runs: recount your total connected wattage against the transformer's minimum load, since some magnetic transformers need a minimum draw to operate properly.

Order Satco S8641. That single number covers the 8W LED MR16 at 3000K with the 40 degree flood beam and GU5.3 base, in gray.

Treat it as an indoor lamp. Satco lists the S8641 for indoor lighting use, so specify it for recessed cans, track, and display heads inside the building. For a wet or damp landscape well light, use a lamp rated for that location rather than this one.