Universal Garage Door Monitor #915LM

Lets you know whether your garage door is open or closed.     Signals from inside any room you choose.   Works with all garage doors; with or without a garage door opener.   the small monitor conveniently plugs into any regular socket.   The light flashes red when the door is open, green when the door is closed.     Gives you peace of mind knowing your garage door is closed.   It's a fast, easy installation with no tools required, and makes a great gift!