1 Channel 2 Channel 4 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 M

1 Channel 2 Channel 4 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 M
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sku: 1005007417007286
$1.47
Shipping from: China
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