PiRelay Power Relay Module for Raspberry Pi, 4 Channel Shield HAT Expansion Board Pi 4B/3B+/3B/2B/B+/A+

UNIVERSAL COMPATIBILITY - Works seamlessly with Raspberry Pi 4B, 3B+, 3B, 2B, B+, and A+ models, eliminating compatibility concerns and ensuring your automation projects work across different Pi versions CONTROL HIGH POWER DEVICES - Switch AC/DC loads up to 250V AC or 30V DC safely from your Pi's 3.3V GPIO pins, enabling control of lights, fans, pumps, and other appliances for home automation projects EASY HAT CONNECTION - Simply stack onto your Raspberry Pi GPIO header with no soldering required, featuring clear relay status LEDs and screw terminals for quick wire connections in minutes ISOLATED PROTECTION - Optocoupler isolation protects your expensive Raspberry Pi from electrical damage while switching high voltage devices, ensuring safe operation in industrial and hobby applications COMPLETE AUTOMATION SOLUTION - Includes Python code examples and documentation for quick project setup, perfect for IoT projects, smart home systems, robotics, and industrial automation applications