Relay Shield v3.0

SKU 103030009
  • Arduino/Seeeduino Shield compatible
  • High quality relays of 15A max switching current
  • Built-in LED indicator for each relay
  • Relay lifetime up to 100,000 Cycle
  • Relay screws for firm connection
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The Relay 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.


  • • ŸArduino/Seeeduino Shield compatible
  • • ŸRelay screw terminals
  • • ŸWorking status indicators for each relay
  • • ŸHigh quality relays
  • • ŸProvides NO/NC interfaces


  • • ŸOperating voltage: 4.75V~5.25V
  • • ŸOperating current: 8~250 mA
  • • ŸSwitching Voltage: 250VAC/30VDC
  • • ŸSwitching Current: 15A/7A
  • • ŸFrequency: 1Hz
  • • ŸSwitching Power: 70W
  • • ŸRelay Life: 100,000 Cycle
  • • ŸESD contact discharge: ±4KV
  • • ŸESD air discharge: ±8
  • • ŸDimension: 68.7 x 53.5 x 30.8 mm
  • • ŸNet Weight: 55±2 g


  • 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  ŸRELAY 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


Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.

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Questions and Answers
Does the "Ink"Color Bag have silver tone hardware? (Chain)? It is hard to tell in photo
on Aug 5, 2014
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I bought the black one and the chain is gold color. Not sure of the ink bag.
on Aug 5, 2014
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You need a WiFi Internet connection, and a smartphone or tablet for the Echo App. That's it. It is easy to set up, but it may take you a while to figure out all of the little things that the Echo App can do.
on Aug 5, 2014
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BEWARE this is NOT STEREO and it is NOT MONO. This is only one channel. You will not hear part's of songs (recorded in stereo) that are only played through the left channel. Kinda ridiculous. Still it is a decent sounding speaker.
on Aug 5, 2014
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★★★★★ Great bag
Purchased this for my 23 year old daughter in the butterscotch color. Great versatile color. She loves the size -- perfect for day or going out at night. Chain can be double to shorten for nighttime and left long to wear as a crossbody during the day.
September 2, 2013 by
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