4 Channel Relay Module for Raspberry Pi High Voltage Switching Board Plug and Play Home Automation Add On for Pi 4B 3B Plus 3 2 B Zero Series Programmable No Programming Required Easy Electric Device Control

4-Channel Relay Module for Raspberry Pi - safe HV control
✔️ Stackable 4-channel relay with I2C, 3A 250V AC/3A 30V DC (single)

4 Channel Relay Hat Board for Raspberry Pi is a compact, plug-and-play module that lets your Pi switch mains appliances safely. It’s ideal for home automation projects, prototyping, and DIY smart home setups.

✅ 4-channel relay module with 3A 250V AC and 3A 30V DC support
✅ I2C protocol supported with address dial switch for stacking
✅ Stack up to four layers for expanded channels
✅ Plug-and-play compatibility with Raspberry Pi, Arduino, STM32, ESP32/8266
✅ LED status indicators for easy monitoring

💡 What is a 4 channel relay module used for in Raspberry Pi projects? This handy device lets you safely switch mains appliances from a Pi, expanding control of automation systems
- handy for turning lights and motors on/off from Pi
- supports I2C addressing for stackable setups
- provides isolation and safe high-voltage switching