1. Glass broken button, also called the emergency push button, it is a series in the electric lock loop, to prevent the entrance guard system of card reader, push button or controller hardware failure inside personnel dozen do not open the door 2. Locked in the room, when faced with the above situation to press the emergency push button and the lock power will be disconnected, the door is opened 3. Use the fireproof material, accord with the safe request 4. Sandblast panel with elegant style 5. Standard structure: fireproof material, easy to install 6. Current rating: 3A 36VDC Max 7. Output contact: NO\NC\COM 8. Suitable for door: exit door, emergence door 9. Operating temp:10~+55 Degrees Celsius(14-131F) 10. Operating Humidity: 0-95% (non- condensing) 11. Dimensions: 8.6x8.6x5cm