1 channel module relais 5V avec Optocoupleur

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10pcs BESTEP 1 Channel 5V Relay Module 30A With Optocoupler

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1 Channel 5V Relay Module with Optocoupler

is designed for switching only a single high-powered device from your Arduino. It has a relay rated up to 10A per channel at 250VAC.

Relay Module 5V 1 Channel with Optocoupler