Parallax Single Relay Board (27115)
Overview
The Parallax 27115 is a compact single-relay interface board intended for prototyping and education. It provides a ready-made electromechanical relay and connectors so a microcontroller or logic circuit can switch higher-voltage or higher-current loads without building discrete driver circuitry. The board is designed to simplify wiring and testing of relay-controlled circuits during development.
Why Choose This Part
Using a dedicated single-relay board removes the need to design and assemble driver transistors, flyback protection, and connector wiring, saving development time. The board provides a safer, easier way to isolate logic-level signals from mains or other high-voltage circuits during prototyping and debugging. Its compact form factor makes it easy to add a single switched channel to existing breadboards or development setups.
Applications
Getting Started
Consult the Parallax product documentation for the board's coil voltage, contact ratings, and wiring details before connecting loads. For control, connect the board input to a microcontroller GPIO (Arduino, BASIC Stamp, Propeller, Raspberry Pi, etc.) and provide the required VCC and ground; follow the board datasheet for any required driver or signal polarity. Use appropriate safety precautions when switching mains voltages: disconnect power before wiring and use insulated connectors and enclosures.
