How to Add an Engine Safety Switch on Radiomaster Boxer

15th February 2026

These instruction show you how to create an Engine Safety Switch on a Radiomaster Boxer,

We will also ensure the Engine is Disabled when the Model is selected and add Voice feedback

Start

  • Power on the Transmitter
  • Press MDL button
  • Select the Model to add an Engine Safety Switch
  • Press the Page> button Nine time, Special Functions page should be displayed
  • On an empty line press the Scroll Wheel
  • Scroll to SE↑, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel
  • Select Overr, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel
  • Select CH3, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel
  • Select -100, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel to Tick the Box
  • Press RTN

The Safety Switch has been assigned to SE, on the Top Left Shoulder of the transmitter

Create Voice Feedback

  • Scroll to the Next Blank Line, press the Scroll Wheel
  • Scroll to SE↑, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel
  • Change Overr to PlyTrk, press the Scroll Wheel
  • Scroll to the Right, press the Scroll Wheel
  • Select thrcut, press the Scroll Wheel
  • Scroll to the Box, press the Scroll Wheel to Tick the Box

The transmitter will say Throttle Cut

  • Press RTN
  • Press and Hold the Scroll Wheel
  • Select Copy, press the Scroll Wheel
  • Scroll to the next empty line, press and Hold the Scroll Wheel
  • Select Paste, press the Scroll Wheel
  • Press the Scroll Wheel twice
  • Change SE↑ to SE↓, press the Scroll Wheel
  • Scroll right to  thrcut, Press the Scroll Wheel
  • Change thrcut to thract, Press the Scroll Wheel
  • Press RTN three time to exit

When SE is pressed In the transmitter will say Throttle Active and the Throttle will work, when it is Out the transmitter will say Throttle Cut and the Throttle will be Deactivated

 

 

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