Closed Circuit type Burglary Alarm System protects safes, weapons cabinets, vending/ gambling machines, showcases and window grilles against forced removal. The Burglary Alarm System consists of a spacer ring, rated break point plate, tamper-monitored cover and 4 m of interconnecting cable. The Burglary Alarm System is featured with anti-tamper monitoring contact and is available in closed circuit design. Closed Circuit type Burglary Alarm System is ideal for installation with M10 to M16 fasteners.