Detects the vibration of your existing door bell, door chimes, door intercom announcer or the knocking on your door, it then sends a signal to trigger the CA-360 to alert you
Simple to install with adjustable sensitivity to avoid false alarms
2.5mm Jack for direct connection to your existing doorbell/door chime
Advanced Technology: 2.4 Ghz Smart-Code
Operating range: Up to 200ft, open space - actual distance varies according to house construction