Feature: 1. The default baud rate is 9600BPS, you can select the baud rate 2400 4800 19200 BPS through the jumper 2. In command mode, support up to 64 devices to be used in parallel 3. AT command can be input by serial port super terminal (serial assistant); besides serial port super terminal input, can also be input in other ways 4. Possess six working modes, open, close, jog, self-lock, interlock, and delay 5. The relay have stable structure, excellent performance and long service life Specification: Item Type: RS485 Relay Module Working Voltage: 12V Working Current: Standby 13MA, 1 relay conduction 41MA, 2 relay conduction 69MA, 3 relay conduction 95MA, 4 relay conduction 121MA, 5 relay conduction 149MA, 6 relay conduction 175MA, 7 relay conduct 199MA, 8 relay conduct 225MA 8 photoelectrically isolated input ports (NPN is active at low level). The input/output relationship can be set to associated (default) and non-associated through commands Open, close, jog, self-lock, interlock, and delay six working modes Instruction support 03 06 16 function code The maximum delay under instruction is 255 seconds AT commands can be input by the serial port super terminal (serial assistant); Commands can also be input by other way in addition to the serial port super terminal input In command mode, up to 64 devices can be used in parallel The default baud rate is 9600BPS, you can select the baud rate 2400 4800 19200 BPS through the jumper. Package List: 1 x RS485 Relay Module Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.