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
DC 5V/12V/24V 30A High Power Optocoupler Isolation Relay Module High/Low Trigger | eBay
3V-5V 12V 24V 1 Ch 80KHz Optocoupler Insulation Module Board No Din Rail PLC | eBay