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HC-12 Wireless Transceiver Module (SI4438, 433MHz, 1km)


The HC-12 is a 100mW multi-channel wireless transceiver you can use in your projects to transmit and receive serial information.

The HC-12 is a half-duplex wireless serial communication module with 100 channels in the 433.4-473.0 MHz range that is capable of transmitting up to 1 km. This project will begin by using the HC-12 to create a wireless link between two computers and end with a second article that creates a simple wireless GPS tracker.


  • Communication Protocol: UART 3.3 - 5V TTL
  • Operation Voltage: 3.2V to 5.5VDC
  • Communication Distance: 1,000m in the open space
  • Operation Frequency: 433.4MHz to 473.0MHz
  • Antenna Interface: Spring Antenna
  • No-load Current: 22μA
  • Operating Temperature: -40℃ to +85℃
  • Dimensions: 27.4 x 13.2 x 4mm
  • Weight: 0.7g


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HC-12 Wireless Transceiver Module (SI4438, 433MHz, 1km)

  • Product Code: 102041
  • Availability: In Stock
  • $11.90
  • 5+$11.00
  • 10+$10.00
  • 30+$9.00
  • 100+$8.00