HC12 Si4463 433MHZ RF Wireless Serial Module With Antenna

The HC-12 Wireless Transceiver Module operates on the 433MHz frequency band, providing reliable and long-distance wireless communication with a range of up to 1000 meters in open space. This module is ideal for wireless data transmission in various applications like IoT projects, Arduino, Raspberry Pi, and embedded systems. With a built-in microcontroller, it allows easy configuration and operation through AT commands, making it perfect for both beginners and advanced users.

Key Features

• Long-Range Communication: Up to 1000 meters in open space (with a baud rate of 5,000bps).
• Adjustable Transmission Power: Choose between 8 power settings (up to 100mW, 20dBm) to fit your communication needs.
• Wide Frequency Range: Operates between 433.4MHz and 473.0MHz across 100 communication channels.
• Three Working Modes: Tailor the module’s operation for different applications (e.g., full-duplex, half-duplex, low power).
• Built-In MCU: The module includes an embedded microcontroller, enabling serial communication with external devices.
• Unlimited Data Transmission: There is no limit to the number of bytes that can be transmitted in one session.
• Easy Configuration: Configure the HC-12 with simple AT commands via a USB-to-serial converter (e.g., CP2102).

Technical Specifications

• Working Frequency: 433.4MHz to 473.0MHz
• Supply Voltage: 3.2V to 5.5V DC
• Communication Distance: 1000 meters (open space)
• Serial Baud Rate: 1.2Kbps to 115.2Kbps (default: 9.6Kbps)
• Receiving Sensitivity: -117dBm to -100dBm
• Transmit Power: -1dBm to 20dBm
• Interface Protocol: UART/TTL
• Operating Temperature: -40°C to +85°C
• Dimensions: 27.8mm x 14.4mm x 4mm

HC-12 Configuration via AT Commands

The HC-12 module can be easily configured through AT commands. To enter AT mode, connect a USB-to-serial converter (e.g., CP2102) and pull the SET pin to GND. Below are some of the most important commands:

• AT – Test command (returns "OK" if AT interface is active).
• AT+Bxxxx – Set serial baud rate (e.g., AT+B57600 to set baud rate to 57600bps).
• AT+Cxxx – Set communication channel (e.g., AT+C002 to set to 433.8MHz).
• AT+FUx – Set operating mode (e.g., FU1, FU2, FU3, FU4).
• AT+Px – Set transmission power (e.g., AT+P2 sets power to 2dBm).
• AT+RX – Retrieve all current settings (mode, channel, baud rate, power).
• AT+V – Retrieve module version.
• AT+DEFAULT – Reset module to default settings.

Applications

• Wireless Communication: Send data wirelessly over long distances.
• IoT Devices: Integrate with smart sensors, home automation systems, and more.
• Arduino and Raspberry Pi Projects: Seamlessly connect your microcontroller-based systems.
• Remote Control Systems: Ideal for controlling devices over long distances.

Why Choose the HC-12 Wireless Transceiver?

The HC-12 is an affordable, high-performance wireless module that offers a long communication range, adjustable power settings, and flexible configurations for a wide range of wireless projects. Whether you're building a smart home system, remote control devices, or connecting sensors in a large space, the HC-12 is a versatile solution for all your wireless communication needs.