ESP8266 ESP-12F WiFi Relay Module – Smart Home Dev Board
ESP8266 ESP-12F WiFi Relay Module – Smart Home Dev Board
ESP8266 ESP-12F WiFi Wireless Relay Module – Smart Home Development Board
Take your smart home or IoT projects to the next level with this versatile ESP8266 ESP-12F WiFi Wireless Relay Development Board. Designed for makers, developers, and hobbyists, this single-channel relay module lets you control AC/DC loads wirelessly from anywhere — via your local network or the internet. With flexible multi-voltage power input and all I/O ports exposed, it's the ideal platform for learning, prototyping, and deploying ESP8266-based automation projects.
Made in Mainland China.
Key Features
- Onboard ESP-12F WiFi Module — Mature, stable, and equipped with a large-capacity 4MB Flash for reliable wireless connectivity.
- Flexible Power Supply — Supports AC 90–250V, DC 7–12V, and USB 5V power input via an onboard AC-DC power supply module, making installation simple in virtually any environment.
- Full I/O & UART Port Breakout — All GPIO and UART programming/download ports are fully exposed for convenient secondary development and firmware flashing.
- Onboard 5V Relay — Outputs a switch signal suitable for controlling loads up to AC 250V / DC 30V.
- Built-in Reset Button — Onboard RST reset button for the WiFi module, making development and debugging fast and easy.
- Eclipse & IDE Compatible — Fully supports popular development tools including Eclipse for flexible firmware development.
- Status Indicators — Onboard power LED, programmable LED, and relay status indicator for at-a-glance monitoring.
- Broad Application — Perfect for smart home wireless control, automation learning, remote switching, and IoT development projects.
Specifications
| WiFi Module | ESP-12F (ESP8266) |
| Flash Memory | 4MB |
| Power Input | AC 90–250V / DC 7–12V / USB 5V |
| Relay Rating | 5V, up to AC 250V / DC 30V load |
| Channels | 1 (Single Channel) |
| I/O Ports | All exported (GPIO + UART) |
| Indicators | Power LED, Programmable LED, Relay LED |
| Compatible Tools | Eclipse, Arduino IDE, and more |
What's in the Box
- 1× ESP8266 WiFi Wireless Relay Module (ESP-12F)
- 2× Double Row Pin Headers
- 1× Single Row Pin Header
- 1× Jumper Cap
Please Note: Due to lighting and screen differences, item color may vary slightly from images. Please allow 1–3 cm variance due to manual measurement.
Safety & Standards Reference
For guidance on safe use of electrical and electronic development boards, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety information, and OSHA's Electrical Safety guidelines for best practices when working with AC mains voltages.
Frequently Asked Questions
Q: What power supply options does the ESP8266 ESP-12F relay module support?
A: This relay development board supports three power input methods: AC 90–250V (standard mains), DC 7–12V, and USB 5V. This flexibility makes it easy to integrate into a wide variety of setups — from wall-powered installations to bench-top USB-powered prototyping.
Q: Can I use this module for smart home automation projects?
A: Absolutely. The ESP8266 ESP-12F WiFi module provides wireless connectivity to your local network or the internet, allowing you to remotely control the onboard relay and switch connected AC or DC loads. It's widely used for smart home automation, wireless switching, and IoT development.
Q: Is the ESP-12F relay module suitable for beginners learning ESP8266 development?
A: Yes — all GPIO and UART ports are broken out for easy access, making it straightforward to flash firmware, read sensor data, and control the relay. It supports development tools like Eclipse and the Arduino IDE, making it accessible to both beginners and experienced developers.
Q: What load can the onboard relay switch?
A: The onboard relay is rated for loads up to AC 250V or DC 30V. Always ensure your connected load falls within these ratings and follow proper electrical safety practices when connecting to mains-level voltages.