Inland 8-channel 5V Relay Module IntroductionArduino Relay Shield employs high quality relay with eight channels input and eight channels output. It can be connected to 250V/10A AC element or 24V/10A DC element to the maximum, therefore, it can be used to control lights, motors etc. The modularized design makes it easy to connect to Arduino expansion board. The output state of the relay is shown by a luminous diode for the convenience of actual application.SpecificationControl signal: TTL voltageActive at HIGH levelRated load: 10A 250VAC 10A 125VAC 10A 30DC 10A 28VDCRated Through-current: 10A(NO) 5A(NC)Max Switching Voltage: 250VAC 30VDCContact actuation time: < 10msDefinition of module pins: ) Pin 1 - Pin 8----Controlling end) Power supply (VCC)) Ground (GND)Connection Diagram Sample Codeint BASE = 2 ; // I/O pin connected by the first relay int NUM = 8; //total number of all relays void setup() { for (int i = BASE; i < BASE + NUM; i ++) { pinMode(i, OUTPUT); //set digital I/O pin as output } } void loop() { for (int i = BASE; i < BASE + NUM; i ++) { digitalWrite(i, LOW); //set digital I/O pin as ‘low’, i.e. turning off the relay gradually delay(200); //delay } for (int i = BASE; i < BASE + NUM; i ++) { digitalWrite(i, HIGH); // set digital I/O pin as ‘low’， i.e. turning on the relay gradually delay(200); //delay }
