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Don't Leave the Largest Door In Your Home Open Overnight! This DesignTech Wireless Garage Sentry monitors whether your garage door is open or closed from a remote location anywhere in your home. Avoid unnecessary trips outside to make sure you closed the garage door. Complete kit includes garage door sensor with lithium battery - indoor receiver - plug-in antenna for receiver - AC adapter for receiver - and mounting tape for sensor. 1 Year Manufacturer's Limited Warranty. Made In the USA with FCC and DOC Approved. Features: Receiver alerts you when your garage door is opened or closed with a single beep. Up to 300 foot range between sensor and receiver even covers large homes. How It Works: A mercury switch inside the sensor senses whether the garage door is up or down. Anytime the door changes state - the sensor sends a radio signal to the receiver to update the position change. The green light on the receiver glows anytime the garage door is closed and the red light flashes anytime the garage door is open. The receiver beeps each time the garage door is opened or closed. One receiver can monitor up to 4 garage doors. When any monitored garage door is open - the red light will flash. Easy Installation: Simply attach the battery powered sensor to the inside of your garage door with the included double stick tape or screws. Receiver plugs into any standard electrical wall outlet. CLICK HERE for more information and price |