Single-Channel Relay Module | 5V/12V Opto-Isolated | High/Low Level Trigger

This 5V/12V one-channel relay module with optocoupler provides reliable, isolated switching for your microcontroller projects. It supports both high and low-level trigger modes for maximum compatibility with Arduino, Raspberry Pi, and other development boards, ensuring safe control of high-power AC/DC loads up to 10A/250VAC. Features and Benefits - Optocoupler Isolation - Provides complete electrical separation between your sensitive control circuit and the high-power load, preventing back-EMF damage and ensuring stable operation - Dual Trigger Modes (High/Low Level) - Offers maximum flexibility, allowing you to configure the relay to activate with either a logic HIGH or LOW signal from your microcontroller - Wide Operating Voltage (5V or 12V) - Can be powered directly from common microcontroller boards (5V) or standard power adapters (12V), simplifying your power supply design - LED Status Indicators - Clear visual feedback with separate LEDs for relay coil power and relay activation status for easy debugging and monitoring - Screw Terminal Connections - Secure, reliable connections for your load wiring, preventing loose wires and ensuring safe handling of high currents Applications - Home Automation Projects - Safely control lamps, fans, or small appliances remotely using an Arduino or ESP8266/ESP32 microcontroller - Industrial Control Systems - Interface PLCs or microcontrollers with motors, solenoids, or pumps in prototyping and light-duty automation - Security and Safety Devices - Activate alarms, sirens, or locking mechanisms based on sensor inputs from motion detectors or door contacts - DIY Electronics and Prototyping - An essential, reliable component for students, hobbyists, and engineers building automated systems or testing high-power circuits