Fasizi 2PCS AC 220V Microcontroller TTL Level Optocoupler Isolation Module SCM Testing Board for PLC 1 Channel

1-Channel AC 220V optocoupler module is specially designed for testing or detecting. The item is good quality.Tested before shipping. Package reference weight: 24.97g. Ouput TTL level can be tested by MCU. And the power supply is 3-5V. If output to PIC, it is recommended require up to 5mA current for external logical circuits. When connecting the PLC input terminal, the PLC's COM terminal is connected to the power supply 24V, the input terminal is connected to the signal output OUT of this board, and the GND on the optocoupler board is connected to the negative electrode of the power supply