Standard: EIA RS485,RS422,RS232 Number of interfaces: 1Ch RS422 or 2Ch RS485+1Ch RS232 Connector: Terminal Block
RS422 signal: A1+, B1-, A2+, B2-(4 Pins) Full Duplex
RS485 signal: A1+, B1- or A2+,B2-(2 Pins) Half Duplex RS232 signal: IN, OUT, GND(3 Pins) Full Duplex
Working mode: Asynchronism, point to point or multi point Baud rate: 300-115200bps,auto test serial signal rate detect signal speed automatically, zero delay time
Transfer distance: RS485/422 side:0-1200m RS232 side: 0-15m
Load capacity:RS-485/422 end supports 32 points polling environment Port protect: 600W surge protection 15KV ESD protection | 
