The relay module is generally used in the case that the communication distance of the system is too far, which can extend the communication distance of the bus and enhance the anti-interference ability of the system.
Isolation module is also known as the bus isolator, connected to the front end of the system bus protection loop in the event of a short circuit and other faults, the back-end connected part is isolated from the system, will not cause the whole system can not work normally, after the fault part of the line repair isolator can resume work by itself. It is worth noting that the isolator should be set up on both the signal bus and the power bus.
The main difference between a trunk module and an isolation module is that they have different functions
The trunk module is installed in the middle of the signal line, mainly to alleviate the failure of the signal for a long time transmission
The isolation module is the temporary isolation of the signal line, mainly for daily repair and maintenance, which is the area of the two
A trunk module is a module used to connect two different devices. Using DC24V power supply, the electrical isolation between the bus signal input and output completes the signal isolation transmission of the detector bus, which can enhance the anti-interference ability of the whole system, and has the function of expanding the communication distance of the detector bus.
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Isolation module: Also known as bus isolator. In the bus-based automatic fire alarm system, there is often a local bus fault (such as short circuit), resulting in the whole alarm system can not work normally.