Dimensions: 5.31 in x 1.97 in x 0.75 in (13.5 cm x 5.0 cm x 1.9 cm)
Weight: 3.92 oz (111 g)
Parameters & pinout:
Color: Red
Material: PCB board
Input voltage: 12V
Relay is high level trigger
Trigger voltage: 12V
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 lighting