4-Channel Relay Module DC 12V with Optocoupler H/L Level Triger for Arduino

Module 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 Operating voltage 12V; 
4. the module can be high or low by a jumper setting trigger; 
5. fault-tolerant design, even if the control line is broken, the relay will not operate; 
6. the power indicator (green), the relay status indicator (red) 
7. the interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient 
8. module size: 73mm*50mm*17mm (L*W*H) 
Module interface: 
1. DC+: positive power supply (VCC) 
2. DC-: negative power supply (GND) 
3. IN1,IN2,IN3,IN4: can be high or low level control relay 
S1,S2,S3,S4, high or low level 
Relay outputs: 
1. NO1,2,3,4: normally open relay interface 
2. COM1,2,3,4: Common Interface Relays 
3. NC1,2,3,4: normally closed relay interface 
High and low level trigger options: 
It is low level trigger when jumper connect to LOW pin 
It is high level trigger when jumper connect to HIGH pin 

Package: 
1*12V 4CH relay module

Your order will be dispatched within 3-5 working days. Most deliveries require someone to accept and sign for the delivery to ensure the goods are received correctly. To help you we can arrange for delivery to be made elsewhere. Click here for more information.

We hope you like your purchase, however, if you are not entirely satisfied with any item, it can be sent back to us for a refund, provided it is returned within 14 days after delivery has been made (unless otherwise specified). Please click here for more information.