Xinyu fire doors

 Fire doors --- Shenzhen Xinyu Industrial Co., Ltd. proficient fire doors complete documents, priced direct sales, installation of train Shenzhen fire doors, steel fire doors Shenzhen, Shenzhen glass fire doors, fire doors Class Shenzhen, the Shenzhen B fire doors , Mobile: 13728894133 Mobile: 13556866654 Contact: Miss first wide web site: http: //www.sztx88.com Website: http: //a13556866654.b2b168.com Free Phone: 4008884513 E-mail: 2540559416@qq.com Address: Bao'an District of Shenzhen City Industrial Park, Xinyu Huangmabu normally open fire doors for fire doors, buildings generally door, single-leaf fashion a fire door release switch and a single linkage module, dual-fan fashion two fire door release switch and two single linkage module. After the fire doors on either side of the probe cigarette smoke is detected, to the fire alarm control fire door manufacturers, linkage controller gives an operation instruction has been set according to the report by bus, fire doors for the single linkage module after receiving the command module No Source normally open contact closure, connected to the fire door release switch DC, 24V coil circuit, instantly energized coil releases fire doors; fire doors automatically closed by means of elastic closers, DC, 24V coil loop because fire doors automatically release switch off It is cut off, while the fire door release auxiliary contact switch will fire door state signal input single linkage module, and then sent to the fire alarm control room by bus. Fire control room can also be directly controlled by the bus field linkage module closed fire doors and fire doors closed to get confirmation feedback signal. Reset fire door fire doors required field manual pull reset, reset fire door status signal will also be fed back to the fire control room. There is also a not swing normally open fire doors, sliding doors, called the fire. Xinyu fire doors however, its working principle is: usually rely on adsorption of electromagnetic door holder, fixed to the sliding door will fire normally open, fire, fire doors open single smoke probe will detect signals transmitted by the smoke switch, smoke sense switch off the power supply leads to electromagnetic door holder, door release suction power failure, the door fell shut down by its own weight, this device can be self-made system can also be linked with the fire alarm system. Xinyu fire doors