Description

The ESP8266 NodeMCU based 4-channel relay board integrates the NodeMCU microcontroller, which is based on the ESP8266 chip, with four relay modules. This setup allows users to control multiple high-voltage devices (like lights, appliances, or other electrical equipment) through the NodeMCU’s Wi-Fi capabilities.

Key Features:

• NodeMCU Microcontroller: The NodeMCU is a development board based on the ESP8266 Wi-Fi module, offering powerful networking features and a programming environment compatible with the Arduino IDE. It provides 16 digital I/O pins and supports both Lua script and Arduino programming.
• 4-Channel Relay Module: The relay board includes four relays, each capable of switching high-voltage loads (typically up to 250V AC or 30V DC). Relays act as electrically operated switches, allowing the NodeMCU to control devices that require more current or voltage than the microcontroller can handle directly.
• Wi-Fi Connectivity: The ESP8266 chip provides built-in Wi-Fi, enabling remote control and automation of the relays via a web interface, smartphone app, or other network-connected devices. This makes the board ideal for smart home applications and IoT projects.
• User-Friendly Interface: The board typically includes jumper pins for easy connection and configuration, making it accessible for both beginners and experienced developers. It often comes with indicators and terminals for the relay status and connections.

This combination of the ESP8266 NodeMCU and relay board allows for the creation of versatile and powerful automation systems, with the added benefit of remote access and control via Wi-Fi.