✅ 1‑Channel 5V Relay Expansion Board This is a single‑channel 5V relay module, widely used for Arduino, STM32, Raspberry Pi and other MCU control projects to switch high‑voltage and high‑current loads.

📋 Main Parameters

✨ Key Features ▪ Well‑crafted surface‑mount components, adopt 8050 transistor drive circuit for stable relay operation. ▪ Simple 3‑wire input structure, input pins can connect directly to MCU IO ports or digital circuits. High‑level input triggers relay ON, low‑level input triggers relay OFF. ▪ Comes with working indicator LED, you can easily judge relay working status. ▪ Input and output are electrically isolated. Apply correct supply voltage, feed high‑level signal to input header to activate relay; leave floating or feed low‑level signal to turn off relay. ▪ Reserved 6‑pin output terminal block for convenient wiring. ▪ Pre‑drilled mounting screw holes for easy installation.

💡 Application Scenarios Home automation control, smart light switch, motor and solenoid valve control, equipment power switching, maker education experiment projects.

⚠️ Notes Please pay attention to load current rating, do not exceed the maximum load parameter of the relay. Kind reminder: If there are version differences or images not been updated, please refer to the actual product.