Cheap Occupancy Sensor, motion sensor wall switch WOSS15 Review
I have five of these in my home. I started with one only because I wasn't sure they would work very well and I wanted to try it. It works best in small rooms like the bathroom and walk in closets. The one in my office works well also. We put one in the kitchen for the kids at night. These things are a great deal at the price and I think they help save electricity too.
