4-Channel 5V/12V/24V Optocoupler Relay Module Board With Indicator Lights 4931390801464

4-Channel 5V/12V/24V Optocoupler Relay Module Board With Indicator Lights 4931390801464

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

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