ESP32 Based 4-Channel Relay Board – 230V Opearated

This is an ESP32 Wi-Fi and Bluetooth–based 4-Channel Relay Module designed for home automation and IoT applications. The board works directly on 230V AC input and include filter and coil for improved noise reduction and stable operation.

The board integrates an ESP32 module, four high-quality 5V relays, 817 opto-couplers, and LED indicators for clear status indication. Each relay can control loads up to 250V AC or 30V DC with a maximum current of 7A, making it suitable for controlling lights, fans, and other electrical appliances.

This relay module allows wireless control via Wi-Fi and Bluetooth. When a control signal is received, the corresponding LED turns ON and the relay activates with a clear audible click. Once programmed and powered, the ESP32 manages all operations independently, making the board ideal for IoT-based automation projects.

The onboard AC filter circuit (filter + coil) improves power quality by reducing electrical noise and interference, ensuring reliable performance during continuous operation.

The ESP32 supports easy integration with platforms such as Arduino and can connect to sensors and other devices using its GPIO pins. This board is not pre-programmed, allowing users to customize it fully according to their project requirements.

Sutable for:
Home automation, smart switches, remote control systems, and IoT projects using platforms like Arduino and Blynk 2.0.