5V Relay Module | Optocoupler Isolated | High-Level Trigger for MCU & Arduino

This 1 channel 5V relay module with optocoupler isolation provides reliable, high-current switching for your microcontroller projects. The high-level trigger design ensures compatibility with common 3.3V and 5V logic levels, while the integrated optocoupler delivers 2500Vrms of electrical isolation to protect sensitive MCU circuits from inductive load spikes and noise. Features and Benefits - Optocoupler Isolation (2500Vrms) - Provides complete electrical separation between your control circuit and the switched load, protecting your microcontroller from voltage spikes and electrical noise. - High-Level Trigger (Active-High) - Compatible with standard 3.3V and 5V logic from boards like Arduino, ESP32, and Raspberry Pi, simplifying your wiring and code. - 5V Relay with 10A/250VAC, 10A/30VDC Rating - Safely controls a wide range of high-power AC and DC devices, including lights, motors, and appliances. - Transparent Status LEDs - Visual indicators for relay activation and power supply status allow for quick debugging and system monitoring. - Standardized PCB Design with Screw Terminals - Features common pin spacing for easy mounting on breadboards or enclosures, with secure screw terminals for reliable load connections. - Flyback Diode for Inductive Loads - Includes built-in protection against back-EMF, ensuring long-term reliability when switching motors, solenoids, or coils. Applications - Home Automation Projects - Control lamps, fans, or small appliances remotely using an Arduino or ESP8266/ESP32 microcontroller. - Industrial Control Prototyping - Interface low-voltage PLC or sensor outputs to activate higher-power machinery or safety systems in a workshop setting. - IoT and Smart Device Integration - Add physical switching capability to Node-RED, Home Assistant, or other automation platforms for a custom smart home setup. - Educational and DIY Electronics - An excellent, robust component for students and hobbyists learning about microcontroller interfacing and electromechanical control principles. Note: Ensure your power supply provides stable 5V for the relay coil. Always observe proper electrical safety precautions when working with mains voltage.