HC-12 SI4463 433MHZ High Power Wireless Transceiver Arduino
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Please check the new version: HC-12 44382A 433MHZ High Power Wireless Transceiver Arduino

The HC-12 is a robust, semi-duplex 433MHz wireless serial data transceiver module based on the Si4463 chip. It is designed to provide reliable, long-distance wireless communication, offering an effective alternative to Bluetooth or short-range RF modules. The HC-12 features built-in microcontrollers and configurable parameters, allowing it to communicate transparently with microcontrollers like Arduino or ESP32 using a standard UART serial interface. Its high power output and sensitivity make it ideal for remote control, data logging, and long-range IoT applications.

Specifications

• Chipset: Silicon Labs SI4463 (wireless core)
• Operating Frequency: 433.4 MHz to 473.0 MHz (100 channels)
• Interface: UART / Serial (TTL level)
• Operating Voltage: DC 3.2V to 5.5V
• Transmit Power: Configurable, up to 100mW (+20 dBm)
• Communication Distance: Up to 1,000 meters in open air (at lowest air baud rate)
• Baud Rate: User selectable from 1200 bps to 115200 bps
• Working Current:
  • Transmission: 100 mA (max)
  • Receiving: 16 mA
  • Sleep Mode: ~1 uA
• Antenna Interface: External spring or helical antenna (included with most modules)

Features

• Long-Range Communication: Capable of transmitting data up to 1 km in ideal line-of-sight conditions.
• Transparent Serial Transmission: Acts as a wireless serial cable; data sent to the module is transmitted automatically.
• Ease of Use: Simple AT commands allow configuration of key parameters (channel, power, baud rate) directly via the serial port.
• Highly Reliable: Utilizes the high-performance Si4463 chip for robust data transfer.
• Common Applications:
  • Long-distance IoT data logging and control
  • Wireless remote control and telemetry
  • Smart agriculture and weather monitoring
  • DIY security and alarm systems