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: 1005003013202619
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$1.42
Shipping from: China

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