4-Channel 220V-10A 5V Relay


A relay is an electrically operated switch. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal.

Out of stock


Why 4-Channel 5V Relay?

Because having your Arduino control higher-power devices like lights, motors, pumps, doors, and much more is one of the most interesting and useful applications you may get involved with. But it can be a little difficult and possibly dangerous when power line voltages are being controlled. Furthermore, there are significant differences in controlling AC power compared to DC.

4-Channel 5V Relay Specifications

  • 5V 4-Channel Relay interfaces board and needs 15-20mA Driver Current per relay
  • Also, equipped with 4xhigh-current relay, AC250V 10A ; DC30V 10A
  • Standard interface that you can control directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic

Required Hardware Devices

  • Arduino controller × 1
  • USB data cable × 1
  • 1 relay module × 1


The following is to connect ONE channel (relay), repeat to connect additional channels on different Arduino digital pins.

  • Arduino digital pin 10 –> module pin IN
  • Arduino GND –> module pin –
  • Arduino +5V –> module pin +


//This is to connect ONE 5V relay module, repeat for other relays using other digital pins
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);

Additional information

Weight80 g