XMS200 is a broadcast mode slave communication chip in the two-bus technology, which is used in conjunction with XM2BUS master/repeater. It has the characteristics of bus power supply, no isolation, non-interference wiring, strong anti-interference ability, bus can simultaneously hang 256 devices, communication distance can reach 1000 meters, serial port pass-through (9600, n, 8, 1), compatible with RS485 system, bus bandwidth 4500bps, maximum bus voltage support 36V.