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this is a 5V relay module and uses jd-vcc for the relay power and is compliant with international safety standards
or sensor input
From robotics and automation to IoT projects and sensor applications
they will be absorbed
4 Channel 12V Relay Board Original Boards this is a 5V relay4 Channel 12V Relay Board This 4 channel 12 V relay module is a low pull, high release relay module and features energization status indicator light, release status led is off. By default, this is a 5V relay module and uses jd vcc for the relay power and is compliant with international safety standards, control, and load areas isolation trenches. The 4 channel relay module can be used to control various appliances and other types of equipment with