Chaoyang stainless steel fire doors

 Chaoyang stainless steel fire doors --- Industrial Co., Ltd. of Shenzhen City proficient fire doors complete documents, priced at direct sales, installation of train Shenzhen fire doors, steel fire doors Shenzhen, Shenzhen glass fire doors, fire doors Class Shenzhen, Shenzhen B fire Doors, Mobile: 13728894133 Mobile: 13556866654 Contact: Cai Guang first URL: http: //www.sztx88.com URL: http: //a13556866654.b2b168.com Free Phone: 4008884513 E-mail: 2540559416@qq.com Address : Bao'an District of Shenzhen City Industrial Park, Chaoyang yellow linen for stainless steel fire doors normally open 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 to detect smoke smoke to the fire alarm control fire door manufacturers, linkage controller action directive issued by the report have been set by the bus, fire doors for single linkage module after receiving the command module without Source normally open contact closure, connected to the fire door release switch DC, 24V coil loop, coil energized momentarily releasing fire doors; fire door closers Stretch With automatic shutdown, DC, 24V coil loop due to the fire door release switch off automatically is cut off, while the fire door release switch auxiliary contacts will fire door status signal input single linkage module, and then sent to the fire alarm control room via bus. Fire control room can also be directly controlled by the field bus module linkage closed fire doors and fire doors closed to get confirmation of the feedback signal. Reset Chaoyang stainless steel fire door fire doors fire doors pulling manpower necessary to reset the scene, the fire door status after reset signal will also be fed back to the fire control room. There is also a swing is not normally open fire doors, sliding doors, called the fire. However, its working principle is: usually rely on adsorption electromagnetic door holder will fire normally open sliding door fixed, fire, fire doors open single smoke detected by the probe will spread smoke signal switch, smoke switch off leading power electromagnetic door holder, door release suction power failure, the door fell shut down by gravity, such devices as a system can also be linked with the fire alarm system. Chaoyang stainless steel fire doors