Never again wonder if your garage door is closed! Simply mount the sensor on your door (No tools... everything you'll need is included) and put the monitor in any room in your home.

• Tells you if your garage door is open or closed from any room in your home
• Security for the largest door to your home
• Great convenience and peace-of-mind
• Works with any garage door
• Monitors up to 4 garage doors (with additional sensors - 916LM)
• When light flashes red, door is open
• Fast, easy installation; no tools needed