Stackable 4-Ch. I2C Relay Shield DIY Kit for Arduino

Elevate your Arduino projects with the CANADUINO 4-Channel Stackable I2C Relay Shield, a DIY kit designed for seamless integration and enhanced functionality. This innovative relay shield is a perfect addition for hobbyists and professionals looking to control high-power devices with their Arduino.

Featuring four robust relay channels, each capable of handling loads up to 3A at 250VAC, this shield offers reliability for various applications. Its stackable design means you can effortlessly expand your project’s capabilities without cluttering your workspace. The shield utilizes the I2C interface for communication, requiring only two signals to address up to 64 relays, making it incredibly efficient and easy to integrate with any compatible 3.3V and 5V Arduino module.

Designed with convenience in mind, the shield can be powered directly from the 5V line available on most Arduino modules, such as UNO, MEGA, and Leonardo. For 3.3V Arduino modules like ZERO and DUE, an external 5V source can be connected to the screw terminal.

Whether you're creating home automation systems, custom control setups, or educational projects, the CANADUINO 4-Channel Stackable I2C Relay Shield is an essential tool for bringing your innovative ideas to life.

It communicates with any compatible 3.3V and 5V Arduino module through its I2C interface and only requires the two I2C signals to address up to 64 relays.

The relays can switch loads up to 3A @ 250VAC per relay output. The relays have normally open (NO) and normally closed (NC) contacts to drive loads up to 750VA or larger contactors for even higher switching capacities.

Download CANADUINO® I2C Relay Library (incl. example code) for Arduino

Download PDF Flyer

Note: Nylon mounting hardware is no longer included.