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List Price: $8.99
Your Price: $8.95
Quantity In Stock: 20
BG Part Number: ACS1779
Seeed Studio Relay Shield Ver 2.1

The Relay Shield utilizes four high quality relays and provides NO/NC interfaces that control the load of high current. Which means it could be a nice solution for controlling devices that couldn’t be directly controlled by Arduino’s Digital I/Os. Standardized shield form factor enables smoothly connection with the Arduino. The shield also has four dynamic indicators show the on/off state of each relay.
 
Features:
  • Arduino/Seeeduino compatible
  • Standardized shape design
  • 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;
4 Digital Pins to control 4 Relays: 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