Haven't used them yet but this is a basic 2 pin plug. I bought these to complete the renovation I'm doing with the motion sensor ie. battery replacement. I figured that one day I'd have to change the battery again, so I might as well install it with a plug. TA Dah. If you look at this, you'll know how useful these little stubs can be and how hard they can be to find. I ordered them and received them all within a few days. Since they are inert, simply connect the cord to the plug. I fully expect them to work great.