3 Ch AC 220V Optocoupler Isolation Module

Description: Output TTL level can be detected with the microcontroller. The power supply can be 3-5V Can also access PLC24V level Then the PLC input terminal of the PLC COM power supply 24V input termination of the board signal output OUT, optocoupler board GND power negative Blue 2P 5.0 terminal connected to 220V voltage 3P terminal connected to the microcontroller input Specification: Board Size:73*15mm Functuon:Testing whether AC 220V is existed Ouput TTL Level:can use SCM to test,voltage is 3-5V Adaptive to PLC 24V level Notice: When the power module in the power of the board after the white wire frame can not touch any device .. because it is high voltage. Note the safety of electricity.