Shop single channel 5v optocoupler relay module

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1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
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2 X 1-Channel 5Vdc Optocoupler Relay Switch Module Board For Arduino
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Shop single channel 5v optocoupler relay module

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$1.92
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
Aliexpress
53% off
$1.92
$4.15
1 Channel 5V Relay Module With Optocoupler Isolation Relay MCU Expansion Board High Level Trigger
Aliexpress
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5V 12V 24V 30A High Low Level Trigger 1 Channel Relay Module With Optocoupler Isolation Board Module
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