This sensor also comes with a magnet making it an optional Door/Window Contact sensor along with the Impact/Shock detection on ones window.
Impact Sensor-345 MHz
Unlike traditional glass break technology, this sensor detects the moment of first impact, alerting the homeowner and Central Station before the intruder gets inside.
The shock sensor sensitivity can be adjusted to set how much force is required at impact to trigger the alarm. To increase the sensitivity, turn the white potentiometer clockwise, to decrease the sensitivity adjust counter clockwise.