4 Channel Optocoupler Relay Board 5V/12V/24V Trigger With High & Low Activation 5041377862933

4 Channel Optocoupler Relay Board 5V/12V/24V Trigger With High & Low Activation 5041377862933

4 Channel Optocoupler Relay Module Board High & Low Trigger 5V/12V/24V(12V) Features: Adopt patch photocoupler isolation, strong driving...

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