Best Buy: ADT Door and Window Sensor for Home Security SSH1R0-29
ADT Wireless Slimline Door or Window Sensor
Generic: Blue by ADT Door & Window Sensors
Door and Window Sensor DIY | ADT Home Security Equipment Self-Setup
Samsung SmartThings ADT Door and Window Sensor at Lowes.com
Window Sensors vs. Glass Break Sensors: Pros and Cons
Buy Blue by ADT Door and Window Sensor - Wireless with A Customizable Open Chime - Compatible with Most Doors and Windows only Compatible with Blue by ADT Systems Online at desertcartOMAN
Resideo PROSIXCT ProSeries Wireless Door / Window Sensor
Standard Door and Window Sensor Battery Replacement