Control and power systems for all power operated fire doors and their indicating systems.
防火门及其指示系统的控制和电力系统。
2
When power is cut off , it also can be operated by manual to control the flow of media an avoid accidents .
在电源供应中断时，也可以通过手动来操作阀门启闭，从而紧急控制了介质的流向，也避免了事故的发生。
3
The double-faced hollow toughened glass provides good sound insulation, heat insulation and safety. Installing power-operated or magnetic control shutter will save you the trouble of curtain cleaning.