I bought this on Amazon recently. It's a wireless electrical remote control, which means you can plug any electric item (within reason) and remotely switch it on and off. I didn't know what to expect since it was only $18, but have to say I've been very pleased with it. Does exactly what it says. This one has a range of 100 feet, the other model has an external antenna and has a range of 500 feet. I wired it (for now) to my attic lights, that way the lights are on with a click of a button without having to reach for the switch upstairs. Thought I'd pass it along as I bet this could come in quite handy in a variety of applications. Here is a link to the two models: Skylinkhome - Model WS-100 Skylinkhome.com - Model PA-318
Could use it with the garage wall vac. it would be like have the on/off switch at the end of the hose.