WiFi Module ESP-12F | ESP8266 UART to WiFi Wireless Transparent Transmission
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ESP-12F WiFi Module | ESP8266 UART-to-WiFi Wireless Transparent Transmission for IoT & Embedded Designs
The ESP-12F WiFi Module is a compact 24 × 16 × 3 mm ESP8266-based wireless transceiver for UART-to-WiFi bridging, IoT nodes, and embedded WiFi designs. Onboard PCB antenna, FCC / CE / RoHS / SRRC certified, and a complete protocol stack on-chip — drop it into a design and you have a 2.4GHz WiFi link without a separate MCU+radio architecture.
Bridges asynchronous serial data to a TCP/IP wireless link with a maximum transmission rate of 4 608 000 bps and a typical line-of-sight range of up to 80 metres. Multi-protocol GPIO support (UART, GPIO, ADC, PWM, SPI) lets it act as either a transparent-bridge slave or a fully autonomous node running its own application firmware.
Typical Use Cases
- Smart-home & home-automation hubs — sensor, lighting, and HVAC node connectivity.
- Industrial IoT — UART-to-WiFi gateways for legacy serial equipment.
- Remote monitoring & control — telemetry uplink from low-power embedded devices.
- Smart agriculture & environmental sensing — wireless soil / climate node deployment.
- Wireless sensor networks — mesh / star topologies with ESP8266 endpoints.
ESP-12F WiFi Module Specifications
| Parameter | Specification |
|---|---|
| Part Number | ESP-12F |
| Chipset | ESP8266 |
| Dimensions | 24 × 16 × 3 mm |
| Frequency Range | 2412 MHz to 2484 MHz (2.4 GHz) |
| Max Transmission Rate | 4 608 000 bps |
| Interfaces | UART, GPIO, ADC, PWM, SPI |
| Power Supply | 3.3V (range 3.0V–3.6V) |
| Operating Temperature | -20°C to +85°C |
| Transmission Range | Up to 80m (line-of-sight, environment-dependent) |
| Antenna | Onboard PCB trace |
| Certifications | FCC, CE, RoHS, SRRC |
| Condition | Brand New |
FAQ — ESP-12F WiFi Module
Q: ESP-12F vs ESP-07 — which one do I want?
A: ESP-12F has the integrated PCB antenna and is the more common general-purpose part. ESP-07 has the ceramic antenna footprint with an optional external IPEX connector — pick ESP-07 when the host enclosure blocks RF and you need to route an external antenna.
Q: ESP-12F vs ESP32 modules — when should I move up?
A: ESP-12F is ESP8266-based (single-core, no Bluetooth, ~80 KB usable RAM). ESP32 modules add dual-core, Bluetooth LE, larger RAM, and AI accelerators. Stay on ESP-12F for cost-sensitive WiFi-only nodes; move to ESP32 when the project needs BLE, more memory, or higher compute.
Q: 3.3V supply — does it tolerate 5V on the UART lines?
A: No. The ESP8266 I/O is 3.3V logic; sustained 5V on the RX line will degrade or destroy the input buffer. Use a level shifter or resistor divider when bridging to a 5V host MCU.
Q: Bulk pricing for OEM / production runs?
A: Yes — email contact@lys-sz.com for tray-quantity pricing and tape-and-reel options on ESP-12F volumes.
Related products
- ESP-07 ESP8266 WiFi UART Module (external antenna)
- ESP32-S3-WROOM-1-N8R2 WiFi+BLE Module
- ESP32-S3-WROOM-1-N16R8 WiFi+BT Module
- ESP32-CAM Dev Board with OV2640 Camera
OEM teams stocking ESP-12F WiFi modules by the tray? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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