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Relay Shield v3.0

26,90 €



TheRelay Shield provides four high quality relay that can control high current loads to Arduino / Seeeduino boards. It also provides NO (Normally Open) / NC (Normally Closed) interface. It could be a nice solution for controlling devices that could not be directly controlled by Arduino's Digital I/Os. Standardized shield form factor enables smooth connection with Arduino and compatibles. The shield also has four LED indicators to show the on/off state of each relay.

Relays are useful in switching on/off AC appliances like fan, light, motor or high current DC actuators like solenoid valve etc...

Note: Exercise caution when dealing with AC. Get help from certified electrician.


  • Arduino/Seeeduino Shield compatible

  • Relay screw terminals

  • Working status indicators for each relay

  • High quality relays

  • Provides NO/NC interfaces

Channel1 Interface

  • COM1 - Common pin 

  • NC1 - Normally Closed. Will be connected with COM1 when RELAY1 pin is set low and disconnected when RELAY1 is high; 

  • NO1 - Normally Open. Will be connected with COM1 when  RELAY 1 pin is set high and disconnected when RELAY1 is low; 


  • RELAY1-RELAY4 pins could be connected directly with Arduino pin number of 7-4, so that four relays could be easily controlled by the Arduino

 For technical support, please post your questions to our forum.

Technical Details

Dimensions 100mm x 67mm x 30mm
Weight G.W 77g    
Battery Exclude
Operating Voltage 4.75V~5.25V
Operating Current: 8~250 mA
Switching Voltage: 250VAC/30VDC
Switching Current: 15A/7A
Frequency: 1Hz
Switching Power: 70W
Relay Life: 100,000 Cycle
ESD contact discharge: ±4KV
ESD air discharge: ±8
Dimension: 68.7 x 53.5 x 30.8 mm
Net Weight: 55±2 g

Part List

Relay Shield v3.0 1


  • [Wiki]Relay Shield v3.0

    The Relay Shield provides a solution for controlling high current devices that cannot be controlled by Arduino’s Digital I/O pins due to current and voltage limits.