The input and output module plays an important control role in the fire linkage system, and is mainly used to control low-current external control equipment, such as power cut-off, smoke exhaust valve, air supply valve, roller shutter door, elevator forced landing, etc. The input and output module is also known as the control module, which can output a signal when there is a control requirement, or provide a switching signal to make the controlled equipment act, and at the same time can receive the feedback signal of the equipment to report to the host.
The input/output module typically has a pair of passive normally open/normally closed contacts to control the controlled device. Some manufacturers' modules can be set to active output by parameter setting. In addition, the input and output module can also be divided into single input single output module and dual input and double output module, the former is mainly used to control a single equipment, such as non-fire power supply, air supply outlet, smoke exhaust outlet, etc., and the latter is used to control equipment that requires two actions, such as fire shutter doors, pumps, fans, etc.
In practical applications, the input and output module is an important part of the fire alarm linkage system, and the input and output modules on the market can provide a pair of passive normally open/normally closed contacts to control the controlled equipment. Some manufacturers' modules can be set to active output by parameter setting.