Automatic smoke damper (MTR Engineering) subway ventilation and air conditioning, fire systems, smoke valve with automatic fire alarm system, fire fighting equipment and gas control functions linkage.

• 全自动排烟防火阀（地铁工程用）地下铁道通风、空调系统的防火、排烟阀门具有与火灾自动报警设备及气体灭火系统联动控制的功能。