EMERGENCY BUTTON - The glass break button, also known as the emergency button, is connected in series on the electric lock to prevent people inside not being able to open the door in the event of hardware failure of the card reader, button or controller in the access control system. SAFETY SYSTEM - The product is a Unbreakable Glass Breakaway Unipolar Release Button, suitable for exit doors and emergency doors. Support of electrical control or access control system. EASY TO USE: 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. SAFE - Use fire-proof materials to meet safety requirements. Sandblasting panel, elegant style. It is the best protector for home, shopping mall and other places. EASY INSTALLATION - Use a sturdy plastic shell that is easy to install. suitable for exit doors and emergency doors., Manufacturer: Dioche