The DEV-14645 is a product manufactured by SparkFun Electronics; it's the Qwiic Single Relay. This is a Qwiic enabled relay, which can be controlled through I2C. This relay can switch up to 24VDC/120VAC at 3A. The relay defaults to an open state and requires a digital high to close the circuit.

Applications:

• Remote control of lights or appliances
• Automation projects using microcontrollers
• Security systems
• Robotics projects

Features:

• Qwiic enabled: Utilizes the Qwiic connect system, so no soldering is required to prototype.
• Onboard Relay: Can switch up to 24VDC/120VAC at 3A.
• Digital Control: Easily controlled via I2C communication.
• Open by Default: The relay defaults to an open state, so no current flows until the circuit is closed.
• Easy to interface with microcontrollers

Benefits:

• Simplified Wiring: The Qwiic system makes wiring quick and easy, reducing setup time.
• Safe Switching: The relay provides electrical isolation, protecting the microcontroller from high voltages.
• Versatile Control: Can be easily integrated into a wide range of projects.
• Compact Design: The small form factor allows for integration into space-constrained projects.

The DEV-14645 operates at 3.3V and is designed to be easily integrated with SparkFun's other Qwiic-enabled boards. The board includes a status LED to indicate the state of the relay (open or closed). The Qwiic system simplifies the connection to microcontrollers, requiring only a Qwiic cable. This allows for rapid prototyping and easy modification of projects. The board's design includes protection circuitry to prevent damage from overcurrent or voltage spikes. Example code and libraries are available from SparkFun to simplify the programming of the relay. The Qwiic Single Relay is a useful tool for anyone looking to control electrical devices remotely using a microcontroller.