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. 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: 3A 36VDC Max Applicable to doors: exit doors, emergency doors Operating temperature: 10 - and 55 ℃ (14 - 131F) Material selection: fireproof materials, sandblasting products Working humidity: 0-95 percent (relative humidity) Size(lxwxh): 8.6x8.6x5.0cm or 3.4x3.4x2.0in Package Weight: 163g or 5.7oz Package List: 1 x Emergency Button 1 x Installation Kit Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.