Happymodel 2.4GHz ExpressLRS ELRS Micro TX module ES24TX


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Happymodel ExpressLRS 2.4GHz Transmitter

The Happymodel ExpressLRS module in Micro TX standard was designed by Happymodel based on the open source ExpressLRS  project. The ExpressLRS system is considered by many to be the best system we can see on the market today. It competes with systems such as Crossfire and Tracer, which are very popular. Providing a much lower latency, especially important in FPV racing drones, and high user support.

The Happymodel ExpressLRS transmitter is based on open source software, which allows users to have a real impact on the development of the project. Open Source software allows the software to be freely modified by the community using the product.

The module is based on the popular and proven ESP32, ESP8285 and SX1280 RF chips.

This configuration allows the user to fly up to 10 km under appropriate conditions.

Nadajnik ExpressLRS
Nadajnik ExpressLRS do drona FPV

Despite its small size, the module offers a refresh rate of 500Hz, which is twice as high as in the much more expensive Tracer system. The refresh rate is related to the signal delays, the higher the refresh rate, the lower the delay.


  • Regulatory Domain: ISM2400
  • MCU:ESP32(main),ESP8285(aux,as espbackpack)
  • RF chip:SX1280IMLTRT
  • JR standard 5pin socket
  • Frequency Range: 2400 MHz to 2500 MHz
  • Maximum receive refresh rate: 500Hz
  • Minimum receiver refresh rate: 25Hz
  • RF Output Power: 10dBm~24dBm
  • Power supply voltage: 5v-10v
  • Weight: 9.5gram(without antenna)
  • Size: 55mm*39.5mm*8mm
  • Antenna gain: 1.87dBi


Package include:

  • 1x ES24TX transmitter
  • 1x 24TX80 antenna 
  • 1x Antenna adapter cable
  • 1x Case 
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