Whether you're at home or away, get the peace of mind of knowing when a window, door, cabinet, or other entry point as been opened or closed. Place the Wireless Door/Window Sensor on any space you want to protect and monitor, even cabinets and drawers! The sensor creates a magnetic seal between itself and a contact strip, then sends an alert to your cell phone or email when the magnetic seal is broken. The Homesight System can even be "triggered" by an opening door/window sensor.. to snap a photo or record a short video from a camera pointed at the door.