5V 12V 24V 4 Channel Relay Module With Optocoupler isolation Support High and Low Level Trigger 4 Road Relays Board For Arduino

5V 12V 24V 4 Channel Relay Module With Optocoupler isolation Support High and Low Level Trigger 4 Road Relays Board For Arduino
sku: 4000960641453
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$2.69
Shipping from: China
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