DESCRIPTIONThe 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 IIC bus. Standardized shield form factor enables smoothly connection with the Raspberry Pi . The shield also has four dynamic indicators show the on/off state of each relay. Features：
Raspberry Pi compatible
Interface：IIC , Three hardware SW1 （1, 2, 3） select the fixed I2C-bus address
Relay screw terminals
Standardized shield shape and design
LED working status indicators for each relay
COM, NO （Normally Open）, and NC （Normally Closed） relay pins for each relay
High quality relays
Working status indicators for each relaySpecification：
Compatible：Raspberry Pi ; Other main board via jumpers;
