Fortress Security Store (TM) Glass Break Sensor for Fortress Alarm Home Security Systems

this is a fortress glass break sensor compatible with all of our systems when it senses sharp loud sounds it triggers the alarm one unit can cover an area of up to 50 square feet the sensor comes with a 9-volt power adapter and must be plugged in to operate to open the sensor press in the plastic tab toward the top then pull outward inside you will find a screw in the center of a blue square turning this screw adjust the sensitivity to the right is the screw hole used for mounting a screw pack is included to mount on the wall insert the screw through the hole screw into the wall then reattach the front half of the unit you to test the sensitivity clap in front of your sensor it will light up when triggered