Product description：
1. The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A;
2. Using SMD OPTOCOUPLER isolation , driving ability , stable performance ; trigger current 5mA;
3. The module voltage is 5V;
4. The module can be set to high or low triggered by jumper ;
5. Fault-tolerant design , even if the control line is broken , the relay will not operate ;
6. The power indicator ( green ) , relay status indicator ( red )
7. Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient
8. Module size : 50mm * 26mm * 18.5mm ( L * W * H )
9. Has four mounting bolts holes , hole 3.1mm, 44.5mm * 20.5mm pitch
 
Interface :
1. DC +: positive power supply 
2. DC-: negative power connection
3. IN: can be high or low level control relay
 
Relay outputs :
1. NO: normally open relay interface, the relay before the vacant after the pull shorted with COM
2. COM: Common Interface Relays
3. NC: normally closed relay interface relay shorted with COM ago , after the pull- vacant
High and low trigger selection ends :
1 short jumper with LOW triggered when connected ;
2 When the jumper is high with high short trigger .