KY-019 5V relay module

The KY-019 5V relay module

• Songle SRD-05VDC-SL-C Relay
• Relay UL/CUL Rating: 10A @ 125V AC, 28V DC
• Relay CCC/TUV Raiting: 10A @ 250V AC, 30V DC
• Control high-power devices up to 10A with a simple high/low signal
• Provides isolation between the microcontroller and the device being controlled
• Screw terminals for relay connections
• 3-pin servo-style header for power/signal interface
• LED indicator provides visual feedback
• Voltage requirements: 5V DC (Relay Power), 3.3V to 5V DC (Input Signal)
• Current requirements: ~85 mA (Relay Power)
• Communication: Logic High/Low (3.3V to 5V DC)
• Dimensions: 1.57 × 1.06 × 0.71 inches (4.0 × 2.7 × 1.8 cm)
• Operating temperature: -13 to +158 °F (-25 to +70 °C)

//KY019 5V relay module
int relay = 10; // relay turns trigger signal - active high;
void setup ()
{
  pinMode (relay, OUTPUT); // Define port attribute is output;
}
void loop ()
{
  digitalWrite (relay, HIGH); // relay conduction;
  delay (1000);
  digitalWrite (relay, LOW); // relay switch is turned off;
  delay (1000);
}

[/codesyntax]