HappyModel 2.4G ExpressLRS ES24TX Slim Pro Nano TX Module

Regular price $54.99

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This Slim Pro TX module is designed by HappyModel and 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 drones. Its main hardware architecture is ESP32, ESP8285 and SX1280 RF chips. The ES24TX Slim Pro module is a complete solution that comes with the ExpressLRS firmware pre-installed.


  • Supports up to 1000mW RF power
    *T-lite radio and Tango2 radio need external power supply for this mW
  • RGB LED ready
  • Cooling Fan ready
  • Open source ExpressLRS
  • Long-range, low-latency and high re-flash rates
  • Telemetry data transmission supported
  • CNC aluminum protective shell



Radio Receivers

  • ELRS EP1
  • ELRS EP1


Radio Transmitters

  • FrSky X-Lite
  • FrSky X-Lite Pro 
  • FrSky X9-Lite
  • TBS Tango 2



  • Regulatory Domain: ISM2400
  • MCU: ESP32(main),ESP8285(as ESP backpack)
  • RF chip: SX1280IMLTRT
  • Frsky Lite 8pin socket
  • Frequency Range: 2400MHz to 2500MHz
  • Maximum receive refresh rate: 500Hz
  • Minimum receiver refresh rate: 25Hz
  • RF Output Power: ≤30dBm
  • Power supply voltage: 5v~12v
  • Weight: 1.76oz (50g) (without antenna)
  • Dimension: 67.5 x 30 x 20.5mm (without antenna)
  • Antenna gain: 1.87dBi
  • Firmware target: HappyModel_ES24TX_Pro_Series_2400_TX





(1) HappyModel ELRS ES24TX Slim Pro TX Module
(1) Moxon 2.4GHz Antenna 



  • You can update the firmware using the ExpressLRS configurator or update the firmware via the Wifi hot spot of the “ExpressLRS TX Module”. Just visit the URL “” using your web browser and type in the password: expresslrs.
  • You can also temporarily use this program target: ES24 Tx Slim Pro_v1.0.0
    but note that power levels are not displaying correctly in ELRS.LUA. The 250mw value in LUA is equal to 1000mw power output. We recommend upgrading your firmware once ExpressLRS development team releases the official firmware target.



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