Module de relais 4 canaux, 4 canaux module de relais 5V avec optocoupleur Module de déclenchement haut et bas pour Arduino 5V/12V/24V (5V) : Amazon.com.be: Bricolage
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NOYITO 4-Channel Relay Module DC 5V 12V 24V Self-Locking Triggering Interlocking High Low Level Trigger for PLC Industrial Control (5V): Amazon.com: Industrial & Scientific