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4-Channel 24V Relay Module Board for Arduino
Color: Red- Quantity: 1- Material: PCB board- VCC: Positive power supply input terminal- GND: Negative power supply input terminal- IN1£¬ IN2£¬ IN3£¬ IN4: 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- Input voltage: 24V- Relay is high level trigger- Trigger voltage: 24V- Trigger current: 5mA- Great for DIY project