SATCO Lighting S9550 1.6W, LED MR11 LED, 3000K, 40 degree beam spread, G4 Base, 12V AC/DC

The S9550 is a 12 volt AC/DC MR11 with a bi-pin G4 base, so it drops into any 12V fixture already running a G4 bipin halogen MR11 off a transformer. It draws 0.133 amps at 1.6 watts, well under what the old halogen pulled, so an existing transformer is not going to be overloaded. One limit worth knowing: it is rated for indoor use and damp locations only, so it is not the lamp for an exposed outdoor landscape fixture taking direct weather.

It replaces a 10 watt halogen MR11 and puts out 200 lumens at 1.6 watts. So the light level stays where it was while the draw drops to roughly a sixth. For a property manager relamping a run of display or cabinet fixtures, that is the same look with far less heat coming off the lamp.

Yes, the S9550 is an enclosed rated lamp, so a sealed or fully enclosed fixture is fine. That matters more with LED than it did with halogen, because trapped heat is what kills a non enclosed rated LED early. It also mounts in any burning position, base up, base down, or horizontal.

No. The S9550 runs on 12 volts AC or DC and needs a transformer or low voltage driver ahead of it. There is no line voltage version of this lamp, and the G4 bi-pin base will not go into a 120V socket anyway. If your fixture is wired directly to line voltage, you need a 120V lamp, not this one.

The lamp itself is dimmable. On a 12 volt system the dimming is controlled ahead of the lamp, at the transformer or driver, not at the lamp, so what decides your result is whether that supply is a dimmable type matched to your dimmer. Put this lamp on a non-dimming electronic transformer and it will not dim no matter what the wall control is.

At 40 degrees this is a flood pattern, not a spot. It washes a shelf, a cabinet interior, or a small display case evenly rather than punching a tight pool of light onto one object. If the job is a single piece of art or a focused accent from several feet away, you want a narrower beam MR11 instead; if you are lighting a case or filling under a cabinet, 40 degrees is the pattern you want.

It is fixed at 3000K, a warm white, and there is no color select switch on it, so what you get is what is printed. If your existing lamps are 2700K they will read noticeably warmer beside it, and 4000K will read distinctly cooler. Color rendering is 80 CRI. For anyone standardizing across a facility, note the color temperature is not adjustable on this lamp, so the whole run has to be specified at 3000K to look consistent.

Rated at 25,000 hours. Run 8 hours a day that is over 8 years of service, which is the real argument for relamping fixtures that are hard to reach or in occupied units. Halogen MR11s in the same sockets typically ran a small fraction of that, which is why the labor of changing them was the actual cost.

Clear lens, and the lamp is lensed rather than open. A clear lens gives you a crisper beam edge and more sparkle, which is what you generally want in a display or accent fixture; it also means the source is more visible if the lamp sits at eye level in an open trim. The housing is silver with a plastic base.

It is not a DLC listed product, so it will not qualify for a utility rebate program that requires a DLC listing. It is FCC compliant and is lawful for sale in California.