This module uses high-quality relay, normally open interface maximum load: AC 250V / 10A, DC 30V / 10A SMD optocoupler isolation, strong driving capability, stable performance; trigger current 5mA Each channel of the module can be set by jumper cap high or low level trigger; HiLetgo 4 Channel 24V Relay Module With OPTO-Isolated Support High and Low Level Trigger
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 has a 24V working voltage options ;
4. Each way module can be set 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 ) , 4 relay status indicator ( red )
7. Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient
8. Module size : 73mm * 50mm * 18.5mm ( L * W * H )
9. Has four mounting bolts holes , hole 3.1mm, 67mm * 44.5mm pitch
Interface :
1. DC +: positive power supply ( voltage required by the relay has 24V option)
2. DC-: negative power connection
3. IN1-IN4: each way based on the settings , can be high or low to control the corresponding relay
Outputs :
12- line interface, the interface can be directly connected to all leads , user-friendly
1. NO1 - NO4: normally open relay interfaces , relay before the vacant after the pull shorted with COM
2. COM1 - COM4 Common Interface Relays
3. NC1 - NC4: normally closed relay interface relay shorted with COM ago , after the pull- vacant
High and low trigger selection:
1.S1-S4 in order to relay a way -4 road high and low trigger selection ;
2.Com with low short circuit , triggering the corresponding relay is low , while the high end of the short com high trigger

Package Include:
1* HiLetgo 4CH 24V Relay Module