HC-12 SI4438 Wireless Serial Transceiver Module 433MHz (UART Long Range RF Module)

The HC-12 SI4438 Wireless Serial Transceiver Module is a long-range RF communication module designed for reliable wireless serial data transmission in embedded systems and industrial applications. Based on the SI4438 RF transceiver IC, it operates in the 433MHz ISM band and provides transparent UART communication, allowing wireless replacement of serial cables. With configurable communication parameters, low power consumption, and excellent transmission range, the HC-12 is ideal for remote monitoring, home automation, telemetry, wireless sensor networks, and IoT applications.

The module interfaces directly with Arduino, ESP32, STM32, Raspberry Pi (via UART), PIC, AVR, and other microcontrollers, enabling fast and easy integration into wireless communication projects.

Key Features -

• Based on the SI4438 RF transceiver IC

• Operates in the 433MHz ISM frequency band

• Long-range wireless serial communication

• Transparent UART data transmission

• Configurable baud rate and communication parameters

• Low power consumption for battery-powered applications

• High receiver sensitivity for reliable communication

• Compact PCB module with antenna connector

• Compatible with Arduino, ESP32, STM32, Raspberry Pi, PIC, and AVR

• Ideal for wireless telemetry and IoT projects

Specifications -

• Product type - Wireless RF Transceiver Module

• Model - HC-12

• RF chip - SI4438

• Frequency band - 433MHz ISM Band

• Communication interface - UART Serial

• Operating voltage - 3.2V to 5.5V DC

• Communication mode - Transparent Serial Transmission

• Antenna interface - Spring Antenna / External Antenna Connection

• Transmission distance - Long Range (Line-of-Sight, Environment Dependent)

• Package / Mounting type - PCB Module

Applications -

• Wireless sensor networks

• Remote monitoring systems

• Industrial automation

• Home automation systems

• IoT communication projects

• Telemetry systems

• Arduino and ESP32 wireless communication

• Agricultural monitoring systems

• Robotics and embedded control

• Wireless data acquisition systems