Product review (3 stars): Bulb works on some models, but shoulder is too wide for some with deep bulb sockets.
Works well if the socket will accommodate it. I needed to put a washer in the bottom of the socket because the bulb housing is wider than a regular light bulb. This causes the bulb to tighten on the outer socket edge and not screw down far enough to make contact at the bottom. The washer fixed the problem, but it is a hack that should not be necessary. As a heads-up, I ran into the same problem with electric garage door openers.