2 channel 5v relay module expansion board for arduino works with official arduino boards

Color: Red - Quantity: 1 - Material: PCB board - Input voltage: 5V - Relay is high level trigger - Trigger voltage: 5V - Trigger current: >5mA - VCC: Positive power supply input terminal - GND: Negative power supply input terminal - IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8: Relay control terminal. Input high level make the relay pull-in (Trigger current need over 5mA) input low level release relay - COM: The common terminal. Control signal negative. Short connected to GND - Power LED: When VCC and GND connected to pointed voltage - Relay LED: When relay is pull-in the LED lightening - Great for DIY project

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