HC-12 SI4463 Wireless Serial Module
- Operating frequency: 433.4–473.0 MHz, divided into 100 channels
- Ultra-long range communication up to 1 km – 1.8 km (open field)
- Based on the SI4463 wireless transceiver chip
- Supports TTL UART interface (3.2V–5.5V compatible)
- Communication speed selectable from 500 bps – 115200 bps
- Air data rates from 500 bps – 250 kbps
- Built-in transmit power up to 100 mW (20 dBm)
- Supports FU1, FU2, FU3, FU4 (low power) modes
- Change settings via AT commands
- Low power consumption & sleep mode support
- Small size, onboard spring antenna included
The HC-12 SI4463 TTL Wireless Module is a highly reliable, long-range serial communication module designed for wireless data transmission in embedded systems and IoT projects.
Operating in the 433 MHz ISM band, the module integrates the Silicon Labs SI4463 RF transceiver, offering stable, long-distance data transmission with low power consumption.
With its UART (TTL) interface, the HC-12 can easily interface with Arduino, ESP32, STM32, Raspberry Pi, PIC, and other microcontrollers. It supports multiple air-data modes, adjustable baud rates, and configurable transmission power.
The module uses AT commands for easy configuration and provides excellent penetration through walls and obstacles. It’s widely used in telemetry, smart agriculture, home automation, and wireless sensor networks.
Its compact design, integrated antenna, and high sensitivity make it ideal for long-distance communication where Wi-Fi or Bluetooth are insufficient.
PACKAGE INCLUDES
- 1 × HC-12 SI4463 Wireless TTL UART Module
- 1 × Spring Antenna
| Weight | 6 g |
|---|
- Wireless sensor networks
- IoT devices and automation
- Robot/Drone communication
- Smart agriculture systems
- Long-range telemetry
- Remote monitoring
- Wireless serial extension
- Home security systems
- RC models
- Industrial wireless control
| Parameter | Value |
| Working Frequency | 433.4 – 473.0 MHz |
| Channels | 100 channels (400 kHz spacing) |
| Modulation | GFSK (SI4463) |
| Operating Voltage | 3.2V – 5.5V |
| Communication Interface | UART (TTL) |
| Baud Rate (Default) | 9600 bps |
| Baud Rate Range | 500 – 115200 bps |
| Air Data Rate | 500 bps – 250 kbps |
| Transmission Power | Max 100 mW (20 dBm) |
| Receiver Sensitivity | -117 dBm |
| Working Current | 100 mA (TX), <16 mA (RX), <22 uA (sleep) |
| Transmission Distance | 1000–1800 m (open field) |
| Antenna | Spring antenna included |
| Size | 27 × 13.5 × 4 mm |
| Communication Range Modes | FU1, FU2, FU3, FU4 |
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