Product introduction: Bus signal transmission (S1, S2, GND, +24V), the system has strong anti-interference ability, wiring economy, convenient installation; Automatic calibration, automatic tracking of sensor aging status; Automatic fault monitoring, can indicate the fault location and type; Field programmable linkage output; System scalability two RS485 bus communication interface, can be matched with any equipment with standard MODBUS protocol; Built-in wireless communication module, with wireless communication capability, built-in NB wireless communication module (optional).