The 4 Channel 5V Relay Module with Optocoupler is a reliable and versatile switching module designed for microcontroller and embedded system applications. It allows low-voltage control circuits such as Arduino, AVR, PIC, ARM, DSP, Raspberry Pi, and other development boards to safely control high-voltage AC or DC appliances.
Equipped with high-quality electromechanical relays and optocoupler isolation, the module provides enhanced protection between the control circuit and the load circuit, reducing electrical interference and improving system stability. Each relay channel features an LED status indicator for easy monitoring and troubleshooting.
This module is ideal for home automation projects, industrial control systems, IoT applications, robotics, smart switches, lighting control, motor control, and various DIY electronics projects.








