Seeed Studio Relay Shield v3.0 Shield Compatible with (development kits): Arduino

The Relay Shield offers four high-quality relays that control high-current loads on Arduino/Seeeduino boards. It also offers an NO (NO) / NC (NC) interface. An ideal solution for controlling devices that cannot be controlled directly by Arduinos Digital I/OS. The standardized shielding factor enables a smooth connection with Arduino and compatible devices. The shield also has four LED indicators that indicate the on/off state of each relay.

Relays are useful for switching AC devices such as fans, lights, motors or high current DC drives such as solenoid valves, etc. on and off

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