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

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

Module description: <br /> 1. the module uses genuine quality relay, normally open interfaces Maximum load: AC 250V/10A, DC 30V/10A; <br /> 2. using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA; <br /> 3. the module Operating voltage 12V; <br /> 4. the module can be high or low by a jumper setting trigger; <br /> 5. fault-tolerant design, even if the control line is broken, the relay will not operate; <br /> 6. the power indicator (green), the relay status indicator (red) <br /> 7. the interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient <br /> 8. module size: 73mm*50mm*17mm (L*W*H) <br /> Module interface: <br /> 1. DC+: positive power supply (VCC) <br /> 2. DC-: negative power supply (GND) <br /> 3. IN1,IN2,IN3,IN4: can be high or low level control relay <br /> S1,S2,S3,S4, high or low level <br /> Relay outputs: <br /> 1. NO1,2,3,4: normally open relay interface <br /> 2. COM1,2,3,4: Common Interface Relays <br /> 3. NC1,2,3,4: normally closed relay interface <br /> High and low level trigger options: <br /> It is low level trigger when jumper connect to LOW pin <br /> It is high level trigger when jumper connect to HIGH pin <br /> <br /> Package: <br /> 1*12V 4CH relay module