RC Radios>ExpressLRS

HappyModel ES24TX Slim Pro 2.4GHz ExpressLRS TX Module

5.00 out of 5
(7 customer reviews)

The HappyModel ES24TX Slim Pro 2.4GHz ExpressLRS TX Module is a very popular low latency and high packet rate RF module for Transmitters with nano module bays.


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The Happymodel Slim Pro TX module is based on the open source- ExpressLRS which is a very popular low latency and high packet rate RF module for RC Airplane and FPV Racing drone. Its main hardware architecture is ESP32, ESP8285 and SX1280 RF chip. The ES24TX Slim Pro module is a complete solution which is already pre-load the Expresslrs firmware and its plug and play for Frsky X-lite/X-lite pro/X9 Lite, TBS Tango2, Radiomaster Zorro, Jumper T-Pro

This Slim Pro module comes with an aluminum alloy shell and is equipped with a cooling fan that automatically works when the module is working at 250mw.

The slim pro TX module supports a maximum power output of about 1000mw, this would be very useful for Long Range FPV.



  • Model: ES24TX Slim Pro
  • Regulatory Domain: ISM2400
  • MCU: ESP32(main),ESP8285(as ESP backpack)
  • RF chip: SX1280IMLTRT
  • Frsky Lite 8pin socket
  • Frequency Range: 2400 MHz to 2500 MHz
  • Maximum receive refresh rate: 500Hz
  • Minimum receiver refresh rate: 25Hz
  • RF Output Power: ≤30dBm
  • Power supply voltage: 5v~12v
  • Weight: 50g (without antenna)
  • Dimension: 67.5mm*30mm*20.5mm (without antenna)
  • Antenna gain: 1.87dBi
  • https://github.com/ExpressLRS/ExpressLRS


  • The new Slim Pro module supports a maximum power of 1000mw (requires the power of the remote control to drive), and comes with RGB LED lights, the effect is very cool. The default program has been updated to ExpressLRS V1.0.0.
  • You can update firmware by ExpressLRS configurator or update the firmware via connect the Wifi hot spot of the “ExpressLRS TX Module”, visit “” by browser (password:expresslrs)
  • Supports up to 1000mw RF power (T-lite radio and Tango2 radio need external power supply)

Package Includes:

  • 1 x ES24TX Slim Pro TX Module
  • 1 x 2.4GHz Moxon Antenna

Additional information



7 reviews for HappyModel ES24TX Slim Pro 2.4GHz ExpressLRS TX Module

  1. 5 out of 5

    Daniel Newman (verified owner)

    Works great!

  2. 5 out of 5

    David Ritchie (verified owner)

    Very good service and an amazing team

  3. 5 out of 5

    Ritesh Patel (verified owner)

  4. 5 out of 5

    Richard Sheppard (verified owner)

    NICE KIT. Wow great distance and speed

  5. 5 out of 5

    Graham (verified owner)

  6. 5 out of 5

    Kit (verified owner)

    Works great – once I realized I needed to open the case and flip some DIP switches to update the firmware via the USB port.

  7. 5 out of 5

    Sam Lee (verified owner)

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