Small wireless detector that notifies of glass being broken by intruders. It is installed at a distance of 9 m from the window and filters events that cause false alarms about breakage. Detects broken glass using an electret microphone, which registers the sound of impact against the glass and of the glass falling. Two-factor detection of broken glass prevents false alarms caused by thunder, dogs barking and noise from passing trucks.
– Electret microphone sensing element
– Up to 9m detection of breakage (180°)
– Alarm signal delivery time of 0.15 s
– Operates up to 7 years without battery replacement