The module integrates an STM8S003F3P6 microcontroller, which manages communication with the SI4463 RF chip and allows users to interface with the module using a simple TTL serial interface (RX, TX, GND). This design makes the HC-12 extremely easy to use, even for beginners.

With transparent serial communication, the HC-12 behaves like a wired UART connection—data sent from one module appears at the receiver automatically. Configuration such as baud rate, channel, and transmission power can be set using AT commands.

Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers, the HC-12 is a powerful solution for long-range wireless projects.

Key Features

• Based on SI4463 EZRadioPro RF chip

• Long-range communication up to 1 km (open air)

• Built-in STM8S003F3P6 MCU

• Simple TTL UART interface (RX, TX, GND)

• Low power consumption

• Configurable via AT commands

• Stable and reliable RF performance