... 306 door alarm 1.glass break detector 2.ideal for comercial,office,museum,exhibition,bank, and residential applications alarm discriptionDetection range for Glass break6 mDetection ... mmWeight0,15 kgmin tempreture is 20,appliable to the glass of different type, and different shape,ideal for comercial ... ,exhibition,bank, and residential applications . GB-306 door alarm keeper glass breaker detector