[DETAIL] Module description: 1. The module adopts genuine quality relay, the maximum load of the normally open interface: AC 250V/10A, DC 30V/10A; 2. Using double optocoupler isolation, strong drive capability, stable performance; trigger current 5mA; 3. Each channel of the module can be triggered by jumper high or low level; 4. Fault-tolerant design, even if the control line is broken, the relay will not move; 5. Power indicator (green), 1 relay status indicators (red) 6. User-friendly interface design, all interfaces can be directly connected through the wiring terminals, very convenient Module interface: 1. DC+: Connect to the positive pole of the power supply (voltage is relay 5V) 2. DC-: Connect to the negative pole of the power supply 3 .IN: The relay can be controlled by high or low level Relay output: 1. NO: Relay normally open interface, before the relay is vacant, it will be shorted to COM after picking up 2. COM: Relay Common Interface 3. NC: Normally closed relay interface. Before the relay is closed, it is short-circuited with COM. High and low level trigger selection: 1. S1 is the high and low level trigger selection of relay 1; 2. When com is shorted to low, the corresponding relay is a low level trigger. When com is shorted to high, it is a high level trigger Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement. Note: 1).You satisfactory is our only prsuit. Your feedback is extremely important to us. 2).Please kindly leave us positive feedback once you're satisfied with your purchase. 3).Please don't hesitate to contact us if you're unhappy with your buy, we'll solve all the problems with you. 4)We have time difference,if you contact us, Please give us some time to solve your proplem. 4)As seller,we hope you can get the goods quickly instead of making you angry .We are far away from you.Sorry and Thank you [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Certification: None - Hign-concerned Chemical: None - Origin: Mainland China - Certification: None