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5V ESP8266 WiFi Relay Module – Smart IoT Remote Control Switch

Description:

The 5V ESP8266 WiFi Relay Module is a smart switch solution designed for home automation and IoT projects. It combines a mechanical relay with the ESP8266 WiFi microcontroller, allowing remote switching of appliances or devices via a wireless network. Controlled through WiFi using smartphones, web interfaces, or cloud services, this module enables real-time, wireless control of lights, fans, and other AC or DC loads.

Pre-loaded modules may come with AT firmware or a basic control interface, but the ESP8266 chip is fully programmable using platforms like Arduino IDE, ESPHome, or Tasmota, enabling integration with systems like Home Assistant, Blynk, or Node-RED.

Specifications:

• Operating Voltage: 5V DC

• Relay Output:

  • Max Voltage: 250V AC / 30V DC

  • Max Current: 10A

• WiFi Standard: 802.11 b/g/n (ESP8266 onboard)

• Communication Interface: UART (TX/RX for programming)

• Default Baud Rate (if AT firmware): 115200 bps (may vary)

• Control Modes: Local (GPIO), Remote (WiFi), Cloud (with firmware)

• Dimensions: Compact size (typically ~50mm x 25mm)

Features:

• Built-in ESP8266 WiFi SoC with GPIO and UART access

• One high-quality 10A relay for controlling electrical devices

• Status LEDs for power and relay state indication

• Fully programmable microcontroller

• Can be integrated into smart home systems

• Compatible with popular platforms: Arduino, ESPHome, Tasmota

• Ideal for DIY IoT, remote switching, and automation projects

Applications:

• WiFi-controlled light/fan switches

• Smart home automation

• Remote appliance control

• IoT learning and prototyping

• Security systems and sensors