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4 Channel Relay Module's Path Can Be Triggered By High Level or Low Level Through Jumper Setting; Trigger Current of Opto-Isolator: 5mA This 12V Relay
AEDIKO 2pcs DC 12V Relay Module 4 Channel Relay Board Shield with Optocoupler Isolation Suport High/Low Level Trigger
HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger : Industrial & Scientific
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Buy 4 Channel 12V Relay Module w/ Light Coupling
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4 Relay Module 12V opto-isolated
Module relais OTRONIC® 5v, 8 canaux pour Arduino, ESP8266, NodeMCU, ESP32