Reset button on bottom of large monitor piece. Install door alert on closed door. Push reset button to pair with small door mounted piece. Light will change to red when door is opened
The New CRAFTSMAN Wireless Garage Door Alert Monitor System 953696 is a battery-operated door monitor with an operating range of 100 ft. It features universal compatibility, smart home protocols including infrared and Wi-Fi, and is made of durable plastic material. The sleek white design with a single button makes it easy to use and compatible with various garage door remotes. Ideal for home improvement projects in the building and hardware category, this Craftsman product offers added security and convenience for your garage.