DC 5V 4 Channel Relay Module with Optocoupler Low Level Trigger Module Expansion Board for Arduino 1 2 4 8 CH

DC 5V 4 Channel Relay Module with Optocoupler Low Level Trigger Module Expansion Board for Arduino 1 2 4 8 CH
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sku: 1005002997900011
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$1.61
Shipping from: China
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