A module description:
1, the module uses genuine high-quality relay, normally open interface Maximum load: AC 250V / 10A, DC 30V / 10A;
2, the use of patch optocoupler isolation, drive ability, stable performance; trigger current 5mA;
3, the module operating voltage 5V, 9, 12 V, 24V to choose from;
4, the module can be set by jumper high or low trigger;
5, fault-tolerant design, even if the control line break, the relay will not move;
6, power indicator (green), relay status indicator (red)
7, user interface design, all interfaces can be directly connected through the terminal leads, very convenient
8, the module size: 50mm * 26mm * 18.5mm (L * W * H)
9, with 4 fixed bolt holes, holes 3.1mm, spacing 44.5mm * 20.5mm
Two module interfaces:
1, DC +: then the power supply positive (voltage according to the relay requirements, with 5V.9V.12V and 24V choice)
2, DC-: connected to the power supply negative
3, IN: can be high or low level control relay pull

Relay output:
1, NO: relay normally open interface, relay pull before the suspension, after the connection with the COM shorted
2, COM: relay common interface
3, NC: relay normally closed interface, the relay before the connection with the COM short, pull after the suspension

High and low trigger select side:
1. jumper and LOW short when the trigger is low;
2. When the jumper and high shorts are high, the trigger is high.