Description RS422 interface, two-way communication, full duplex. A B Y Z GND interface, GND can be used, ultra-long transmission 1000 meters with 15KV ESD TVS diode, anti-lightning, anti-peak voltage On board 10 ohm current-limiting, overcurrent protection resistor 120 ohm termination resistor, effectively reduce the long-distance communication echo interference On board power indicator RS485 interface with 2-wire and 3-wire mode, to provide GND, can be chose to use RS485 interface using the conventional 301 terminal, wiring is simple, the user can also self-welding 2.54mm pitch pin TTL side, using 5V DC power supply RXD TXD compatible with 5V logic signal. 3V3 version also available and added. Baud rate of 2.5MBPS Randomly send MAXIM or SIPEX ICs board. Pin Definitions and documents please refer to here.
