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.

Features

• Arduino/Seeeduino Shield compatible

• Relay screw terminals

• Working status indicators for each relay

• High quality relays

• Provides NO/NC interfaces

Technical Specifications

• 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

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  ŸRELAY 1 pin is set high and disconnected when RELAY1 is low; 

• 4 DIGITAL PINS TO CONTROL 4  ŸRELAYS 

• 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

Documents

Please visit 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 forum.