12V 1 Channel Optocoupler Isolation Module Isolated Board No Din Rail Holder PLC Processors 80KHz PC817 EL817 Drive Motor Board: Amazon.com: Industrial & Scientific
12V To 5V/12V To 24V/24V To 3.3V/24V To 5V 2 Channel Optocoupler Isolation Board PLC Signal Level Voltage Conversion Module - AliExpress
2 Bit 12V Relay Module with Optocoupler Isolation Support High and Low Level Trigger Dual Relay Module - 2-Channel Relay - Arduino, Robotics, Raspberry Pi, ESP8266, Learning DIY, Development board ICStation
4 channel 12v to 3.3v 5v PC817 input optoisolator optocoupler with connectors | eBay
Single Channel 12V Optocoupler Breakout Board — PMD Way
5v/12v 1/2/4/8 Channel Relay Module With Optocoupler Relay Output 1 2 4 6 Relay Module 8 Channels Low Level Trigger Output X Way For Arduino - Temu
Optocoupler Isolation Board Voltage Converter 24V to 5V/12V to 24V/5V to 24V 4 Channel Isolated Module PLC Signal Level Board - SINONING- Electronics DIY Accessories Store