12V 2-Channel Relay Module Optocoupler H/L Level Triger for Arduino Raspber, 501 Original

Module description: 1. Maximum load onnormally open pin: AC 250V/10A, DC 30V/10A. 2. Trigger current5mA; 3. Module can be sethigh level or low level trigger by jumper wire; 4. Power indicatorlight (green), relay status indicator light (red); 5. Module size:50mm*41mm*18.5mm. Module interface specifications: 1. DC+ : DC powersupply positive pole 2. DC- : DC powersupply negative pole 3. IN1 : channel 1signal triggering pin 4. IN2 : channel 2signal triggering pin Relay output: 1. Normally closedpin (NC1) : channel 1 relay normallyclosed pin 2. Common pin (COM1): channel 1 relay common pin 3. Normally openedpin (NO1) : channel 1 relay normallyopened pin 4. Normally closedpin (NC2) : channel 2 relay normallyclosed pin 5. Common pin (COM2): channel 2 relay common pin 6. Normally openedpin (NO2) : channel 2 relay normallyopened pin High or low level trigger option: 1. S1:It is optionswitch for channel 1 relay; 2. S2:It is optionswitch for channel 2 relay; 3. It is low leveltriger if COM pin connect to LOW pin; It is high level triger if COM connect toHigh.1 x Relay Module