AC 220V 8 Channel Level 8 Ch Optocoupler Isolation Test Board Isolated Detection Tester PLC Processors Module

Function: Can be used to detect the presence of 220V AC

The output TTL level can be detected by a single-chip microcomputer. Power supply can be 3-5V

Can also be connected to PLC24V voltage.

When connected to the PLC input terminal, the COM terminal of the PLC is connected to the power supply 24V input terminal to the signal output of the board S1-S8, and the GND of the optocoupler board is connected to the negative pole of the power supply.

Blue 5.0 terminal connected to 220V voltage

Yellow pin signal output

Output low when 220V voltage is normal Output high when 220V is powered off.