Ear chipset: XR17V358
RS485 signals: data+ (B) data- (a) GND
RS422 signals: T/R+ T/R- RXD+ RXD- GND
600W Surge protection, 15kV ESD protection for Serial Ports
Working mode: Asynchronous working, point-to-point to point-to-multipoint 2 wires (half duplex) 4 wires (full duplex)