SiK Telemetry Radio V3 433MHz 100 mW


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Holybro’s SiK Telemetry Radio V3 433MHz 100 mW is a versatile open-source radio platform, offering 300m+ range and easy plug-n-play compatibility with Pixhawk Standard and other flight controllers. With robust firmware designed for MAVLink integration, it simplifies telemetry connections between autopilots and ground stations. The radio operates at either 915Mhz or 433Mhz, so choose the appropriate model for your region. Additional features include adjustable output power, receive sensitivity, and a transparent serial link. It’s your reliable choice for efficient communication in the world of drones.


This Holybro SiK Telemetry Radio 433MHz 100 mW is a small, light, and inexpensive open-source radio platform that typically allows ranges of better than 300m “out of the box” (the range can be extended to several kilometers with the use of a patch antenna on the ground). This radio is plug-n-play all Pixhawk Standard and other Flight Controller, providing the easiest ways to setup a telemetry connection between your Autopilot and a ground station. It uses open-source firmware which has been specially designed to work well with MAVLink packets and to be integrated with the Mission Planner, Ardupilot, QGroundControl, and PX4 Autopilot. The radios can be either 915Mhz or 433Mhz and you should purchase the model which is appropriate for your country/region.



  • Open-source SIK firmware
  • Plug-n-play for Pixhawk Standard Flight Controllers
  • The easiest way to connect your Autopilot and Ground Station
  • Interchangeable air and ground radio
  • Micro-USB port (Type-C Adapter Cable Included)
  • 6-position JST-GH connector



  • 100 mW maximum output power (adjustable) -117 dBm receive sensitivity
  • RP-SMA connector
  • 2-way full-duplex communication through adaptive TDM UART interface
  • Transparent serial link
  • MAVLink protocol framing
  • Frequency Hopping Spread Spectrum (FHSS) Configurable duty cycle
  • Error correction corrects up to 25% of bit errors Open-source SIK firmware
  • Configurable through Mission Planner & APM Planner
  • FT230X/FT231 is a USB to BASIC UART IC



  • 28 x 53 x 10.7mm (without antenna)


Electrical Data

  • Supply voltage: 5V DC (from USB or JST-GH)
  • Transmit current: 100 mA at 20dBm
  • Receive current: 25 mA
  • Serial interface: 3.3 V UART



  • 2AP22-HT03-V3


Package Included

  • Radio modules with antennas 433MHz 100 mW *2
  • Micro-USB to USB-A cable *1
  • Micro-USB to Micro-USB OTG adapter cable *1
  • Micro USB to Type C Adapter
  • JST-GH-6P to JST-GH-6P cable *1 (for Pixhawk Standard FC)
  • JST-GH-6P to Molex DF13 6P (for Pix32, Pixhawk 2.4.6, etc.)





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