8 Channel 5V Relay Module with Optocoupler for Arduino Automation

8 Channel 5V Relay Module with Optocoupler for Arduino Automation

This 8-channel 5V relay module allows a microcontroller to switch multiple AC or DC loads through relay contacts. It is suitable for Arduino, ESP32, STM32, and other controller-based automation projects. The optocoupler isolation, depending on the board design, helps separate control signals from relay switching circuits. It is commonly used in home automation, appliance control, irrigation systems, lighting control, industrial training projects, and multi-load switching panels. Package includes the same components as the picture.