ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch

ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch

The ESP-12F WiFi 4-Channel Relay Module is a highly integrated solution for smart home automation and IoT applications. Built on the reliable ESP8266 ESP-12F WiFi module, this relay board enables wireless control of up to four AC or DC loads via mobile apps or microcontroller-based systems. Designed with a robust AC-DC power module and secondary development in mind, it supports Arduino IDE, ECLIPSE, and other development platforms.

Key Features 

• Built-in stable ESP-12F WiFi module with 4MB flash memory.
• All GPIO and UART ports are broken out for easy secondary development.
• Wide power input support: AC 90–250V / DC 7–30V / 5V.
• Onboard reset button for the ESP module.
• Compatible with Arduino IDE, ECLIPSE, and other development tools.
• 4-channel 5V relays support up to AC250V or DC30V switching.
• Onboard power LED, programmable LED, and relay status indicators.

Technical Specifications:

Interface Description

Programming Port:

• Connect GND, RX, TX, and 5V of ESP8266 to external TTL serial port (GND to GND, TX to RX, RX to TX, 5V to 5V)
• Connect IO0 to GND during programming, then disconnect after upload

Relay Output:

• NC (Normally Closed): Connected to COM before relay activation
• COM (Common): Relay common terminal
• NO (Normally Open): Connected to COM after relay activation

GPIO Pinout:

• All standard GPIOs of ESP8266 are accessible via headers for custom functionality or sensor integration

Program Download Guide

• Connect IO0 to GND using jumper wires or caps
• Use a TTL-to-USB adapter (e.g., FT232) and connect to PC
• Connect to the board: GND↔GND, TX↔RX, RX↔TX, 5V↔5V
• Select the correct COM port and board type in Arduino IDE
• Click "Upload"; the code will compile and transfer to the board
• After upload, disconnect IO0 from GND and reset the board

Applications

• Smart home device control
• Wireless industrial automation
• IoT-based switching systems
• Remote ON/OFF control
• Security and access automation
• Smart farming systems

Packaging Details

• 1 X ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch

Why Choose This ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch?

Perfect for smart home, IoT devices, and automation systems. With wide voltage support, Arduino compatibility, and 4-channel control, it's a reliable and scalable choice for developers and enthusiasts in Bangladesh.

Where to Buy ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch?

This Product is available at TechShop, a trusted supplier of Robotics & Electronics in Bangladesh. Visit our office or order online to enjoy swift delivery across the country. We offer the ESP8266 ESP-12F 4 Channel Wifi IoT Smart Switch at the best price in Bangladesh. Our product ensures reliability and quality, backed by customer support from a skilled technical team. Enjoy prompt shipping and warranty protection for a worry-free purchase.

Why Should You Buy Products from TechShop?

  There are many reasons to shop at TechShop.

• Reliability: We ensure that all our products are of the highest quality and come with a Warranty and Replacement service
• Easy Policies: If you encounter any issues, our quick and hassle-free replacement policy ensures your work continues without interruptions.
• Customer Support: Our customer support team is always available to ensure you have the best shopping experience.

Buying from TechShop means a safe, hassle-free, and cost-effective experience!

Attention

Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please contact us to determine if further actions may be taken.

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