1、Witnesses only need to break the panel glass of the fire safety alarm button in intensity to send the fire alarm signal to the controller and send part of the fire alarm signal. 2、Sandblasting panel, elegant style. It is the best protector for home, shopping mall and other places. 3、Use fire-proof materials to meet safety requirements. 4、Use durable plastic shell, easy to install. 5、Support electrical control or access control system. The product is a broken glass fire emergency exit release button (unipolar), suitable for exit doors and emergency doors. Features: New emergency release alarm button for broken glass. Support electrical control or access control system. Use durable plastic shell, easy to install. Use fire-proof materials to meet safety requirements. Sandblasting panel, elegant style. It is the best protector for home, shopping mall and other places. Witnesses only need to break the panel glass of the fire safety alarm button in intensity to send the fire alarm signal to the controller and send part of the fire alarm signal. Specifications: Rated current: 2A@36VDC Max Applicable to doors: exit doors, emergency doors Operating temperature: 10 ~ + 55 ℃ (14 - 131F) Material selection: fireproof materials, sandblasting products Working humidity: 0-95% (relative humidity) Size(l*w*h): 8.6*8.6*5.0cm/3.4*3.4*2.0in Package Weight: 144g/5.1oz Package List: 1 * Emergency Button