Item Type: Relay Module
Optional Style:5V, 12V

Relay version Quiescent Current Maximum current Trigger current
5V 5mA 190mA  2-4mA
12V 5mA 80mA  2-4mA Module Interface Description:
1.DC +: Module DC power supply positive (positive voltage of trigger terminal)
2.DC-: Module DC power supply negative (trigger terminal voltage negative pole)
3.IN: signal trigger terminal (default trigger voltage is the same as power supply)
4. High / low level trigger mode selection, as shown in the figure, when the jumper is connected to the L terminal, the IN terminal is a low level trigger, and when it is connected to the H terminal, the high level trigger
5. Normally closed end (NC): normally closed end of relay
6. Common terminal (COM): relay common terminal
7. Normally open (NO): relay normally open