I basically like these LED lights a lot, I just wish they were brighter. They have well defined beamwidth, which has very practical application in aircraft. I needed to use them in pairs to get the amount of light I needed. I put four pairs of them in the overhead console on my P210, and the results were stunning. The fact that they are not too bright means I had to distribute the lighting, which turns out to be fine, and there are less shadows. The LEDs are very directional, and though they may be near your eyes, they are not blinding at all (whereas the standard overhead incandescent light IS blinding since it radiates equally in all directions). You can actually fly the plane at night with these lights on, and yet see outside just fine since the light is directed onto your lap and very little light goes sideways.
The approximate dimensions are: 1-9/16" Length x 13/16" Width x 7/16" Depth.
Per the supplier: The current draw is approx. 10 milliamps.
Yes, they are dimmable.
The Dome and Baggage Area lights do not contain a switch.