5V 1 channel relay module for Arduino

5V 1 channel relay module for Arduino - Maximum load: AC 250V / 10A, DC 30V / 10A - Trigger current: 5mA - Voltage: 5V - Module size: 50 x 26 x 18.5 mm (L x W x H) - DC +: positive power supply (VCC) - DC-: negative power supply (GND) - IN: can be high or low level control relay - None: Normally open Relay Interface. - COM: Relay common interface - NC: normally closed relay interface. - It is a low trigger when the jumper is connected to the LOW pin. - It is a high level trigger when the jumper is connected to a high pin. code basic------------ int relayPin = 8; void setup() { Serial.begin(9600); pinMode(relayPin, OUTPUT); } void loop() { digitalWrite(relayPin,LOW); delay(500); digitalWrite(relayPin,HIGH); delay(500); }