The Ultimate in Garage Door Security
You'll always know the garage is closed and secured.
With the Garage Door Monitor, you'll know your garage door is closed with just a glance. Install the wireless sensor on the door (It's easy!), using the hook-and-loop tape and plug the indoor receiver into any AC outlet. When the receiver's LED is red, the door is open. If it's green, the door is closed. Works with any garage door. Monitor up to 4 doors using additional sensors (see below). Batteries included. | 
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