5V/9V/12V/24V 1/2/4 Channel Relay + High Low Level Trigger Optocoupler Support

5V/9V/12V/24V 1/2/4 Channel Relay + Optocoupler Support High/Low Level Trigger

5V/9V/12V/24V 1/2/4 Channel Relay +Optocoupler Support High Low Level Trigger

1 channel DC 5V/9V/12V/24V Optocoupler Relay Module Support High and Low Trigger

5V/9V/12V/24V 1/2/4 Channel Relay + Optocoupler Support High Low Level Trigger

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12V 1/2/4/8/16 Channel Relay Module With optocoupler For PIC AVR DSP ARM Arduino