Generic LC-Relay-ESP12-1R-MV ESP8266 1-Channel Wi-Fi Relay Module
SKU: IOWC-1405
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Generic LC-Relay-ESP12-1R-MV ESP8266 1-Channel Wi-Fi Relay Module

₹779.00 (Inclusive of all taxes)
Out of Stock

The LC-Relay-ESP12-1R-MV is a single-channel relay development board based on the ESP-12F Wi-Fi module, designed for smart home automation and wireless control. It supports flexible power inputs (AC90-250V/DC7-12V/USB5V) and is programmable via the Arduino IDE or Eclipse for custom IoT applications.

Features

  • Integrated ESP-12F Wi-Fi module with 4MB Flash for robust wireless connectivity and firmware storage.
  • Versatile power supply accepts AC90-250V, DC7-12V, or USB 5V via an onboard AC-DC switching module.
  • Single 5V relay channel controls loads up to 10A at AC 250V or DC 30V for appliance switching.
  • Full I/O and UART program download port breakout for easy secondary development and debugging.
  • Onboard status LEDs (power, programmable, relay) and a physical reset button for convenient operation.

Out of stock

Description

This ESP8266-based Wi-Fi relay module serves as a foundational development platform for integrating high-voltage switching control into IoT networks. The board leverages the mature ESP-12F module, providing a reliable 2.4GHz Wi-Fi link and ample 4MB Flash memory for complex application code and OTA updates. Its core function is the onboard 5V electromechanical relay, capable of directly switching AC mains or DC loads, making it suitable for controlling lights, fans, motors, or other appliances.

Engineered for developer flexibility, the module breaks out all critical ESP8266 GPIOs and the serial UART interface, enabling seamless integration of additional sensors or actuators. The integrated switching power supply accepts a wide range of input voltages, from mains AC to low-voltage DC and USB, simplifying deployment in various electrical environments. With support for the Arduino development ecosystem and provided reference code, it accelerates prototyping for smart home automation, industrial telemetry, and remote control systems.

Key Features

  • Onboard ESP-12F Wi-Fi module with pre-certified RF performance and 4MB Flash memory.
  • Integrated AC-DC switching power supply supporting AC90-250V, DC7-12V, and USB 5V inputs.
  • Single-channel 5V relay provides isolated switching for high-voltage/high-current loads.
  • All module I/O pins and the UART programming port are accessible via header pins for expansion.
  • Dedicated reset button for the Wi-Fi module and multiple status LEDs for visual feedback.
  • Compatible with popular development frameworks including Arduino IDE and Eclipse-based tools.
  • Robust operating temperature range from -25°C to 85°C for reliable performance in varied environments.

Applications

  • Smart home automation for wireless control of lights, fans, and AC appliances.
  • Industrial IoT (IIoT) for remote switching of machinery and telemetry systems.
  • DIY projects and educational platforms for learning ESP8266 programming and relay control.
  • Agricultural automation for controlling irrigation pumps or ventilation systems.
  • Energy management systems to schedule or remotely switch high-power devices.

Technical Specifications

Microcontroller/SoCESP8266 (ESP-12F Module)
Wireless ProtocolsWi-Fi 802.11 b/g/n
Supply VoltageAC90-250V / DC7-12V / USB 5V
Relay Output1 Channel, 5V Coil
Load Rating10A Max @ AC 250V or DC 30V
Communication InterfaceUART (for programming & communication)
Flash Memory4 MB
Operating Temperature-25℃ to 85℃
Operating Humidity5% to 95% RH
Dimensions (L x W x H)80 x 50 x 19 mm

Frequently Asked Questions

How do I program this ESP8266 relay module?

You can program the module using the Arduino IDE. First, install the ESP8266 board package via the Boards Manager. Connect the module's UART pins (TX, RX) to a USB-to-serial adapter. Select 'Generic ESP8266 Module' as the board, choose the correct COM port, and upload your sketch. The provided reference code demonstrates basic relay control via Wi-Fi, which you can modify for MQTT, HTTP, or custom TCP protocols.

What power supply should I use for this board?

The board accepts three input types: AC mains (90-250V AC), low-voltage DC (7-12V DC), or USB 5V. For direct wall outlet connection, wire the AC Live and Neutral to the AC input terminals. For battery or adapter use, connect DC positive and negative to the DC input pins. The onboard switching regulator converts this to the 3.3V and 5V needed by the ESP8266 and relay, respectively. Ensure your power source can provide sufficient current, especially when the relay is energized.

How do I wire the relay to control an AC appliance?

The relay has three screw terminals: Common (COM), Normally Open (NO), and Normally Closed (NC). To switch an AC device, disconnect its live wire and connect one side to COM and the other to NO. When the relay is activated, COM connects to NO, completing the circuit. Always ensure the appliance's voltage and current (max 250V AC, 10A) are within the relay's rating. For safety, enclose the board in an insulated case when dealing with mains voltage and follow all local electrical codes.

Can I use this module with Home Assistant or other smart home platforms?

Yes, you can integrate it with Home Assistant, OpenHAB, or similar platforms. After flashing firmware (like ESPHome or Tasmota), the module will appear as a switch entity. In ESPHome, define the relay's GPIO pin and Wi-Fi credentials in the YAML configuration, then compile and upload. The module will connect to your network, and Home Assistant can auto-discover it via MQTT or the native API. This allows for scheduling, automation, and voice control through Google Assistant or Amazon Alexa with minimal coding.

Package Includes

  • 1 x ESP8266 Wireless Wi-Fi 1 Channel Relay Module

Additional Information

Weight 0.035 kg
Dimensions 8 × 5 × 1.9 cm

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