Emergency Door Release Glass Break Alarm Button Fire Alarm Swtich Break Glass Exit Release Switch Specifications: Clolor: Red Operating Voltage:24-220VDC Operating current: 5A Type: Break glass Dimension:86*86*50mm Features: The emergency release glass break alarm button is suitable for the exit door and emergency door. Just break the face-plate glass of the alarm button in strength, then can make conflagration signal sending to the controller. Supports electrical control or access control system. Made of durable plastic shell and easy to install. Use the fireproof material, accord with the safe request. Sandblast panel with elegant style. Best protector in home, shop and other places. Package List: 1 * Break Glass Switch 1 * Set of Mounting Screws