... Auto sense serial signal rate, zero delay automatic transmitCommunication Standard Accord EIA RS232, RS-485, RS-422 standardRS-232 signalTX, ... +, T-, GND Working formatAsynchronism, point to point or multi-point, 2 line half duplex, 4 line duplexDirectionAutomatic ... port 3 industrial terminal block, RS-422 port 5 industrial terminal blockEnvironment Working temperature-40 to 80Storage temperature-40 to ...