Temperature electric double control door closing device

Product overview:

The temperature control electric double door closers, also known as the device normally open firedoors, fire doors after the installation of this device, (usually no electricity and a reset lever in reset stata), push the door to door 0-180 degrees arbitrary angle positioning, the fire ree door,can be opened manually, manual keep close and open fire, fire doors; no matter in any position, received fire signal(DC24V) or 68 + temperature reacges 5 DEG C., the temperature sensitive glass ball, make the fire doors closed after the 'open a closed manual as a manual open automatically shut down' the movable fire barrier.