The Arduino 4 Relays Shield is a solution for controlling high-power loads that cannot be driven by the Arduino's digital I/Os due to the controller's current and voltage limits.

The shield has four relays, each with 2-pole changeover contacts (NO and NC); to increase the current limit of each output, 2 changeover contacts are connected in parallel. Four LEDs indicate the on/off state of each relay.

Compatible with all Arduino boards, 5V and also 3.3V standards.

• EAGLE FILES
• SCHEMATICS
• Arduino Software (IDE)