Optocoupler Isolation Board 24V To 5V PLC Level Voltage Converter Module

5V 12V 24V 1/2/4/8 Channel Relay Module Board Shield Optocoupler High Low Level

Optocoupler Isolation Board 8 Channel Driver Photoelectric Isolated Module

4-channel Photoelectric Isolation Module PLC Signal Conversion Board PNP Output

Optocoupler Isolation Board 8 Channel PLC Voltage Detection Module 220V AC BS

PC817 2/4/8 Channel Optocoupler Isolation Board Voltage Converter Adaptor Module

3PCS PC817 4 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Drive

1Channel Optocoupler Isolation Module Photoelectric Isolator Signal 3-5V/12V/24V