HappyModel ExpressLRS Long Range 915MHz ES900TX/RX Module ELRS Combo Kit

  • $56.00

HappyModel ExpressLRS Long Range 915MHz ES900TX/RX Module ELRS Combo Kit

ES900TX and ES900RX modules are a set of Long Range 915MHz/868MHz(optional) wireless transmission equipment developed and designed based on the open source software ExpressLRS. This set of modules is characterized by ultra-long range, stable operation and low latency. The module is compatible with most Opentx remote controllers, especially suitable for Radiomaster TX16S, Max Edition and Jumper T12 T16 T18 series remote controllers, basically plug and play. We have specially customized the heat sink for the transmitter module, and also reserve the installation position of the 2006 fan which can help the transmitter module to operate stably under high power conditions.

New ES900TX module coming with a 2006 Fan, it would working automatically when the TX power is 250mw.

Source on GitHubhttps://github.com/ExpressLRS/ExpressLRS
ExpressLRS community:ExpressLRS – High Performance Radio Control Link

As ExpressLRS firmware is constantly being improved and updated, we strongly recommend that you use the ExpressLRS configurator update firmware to get the best experience

Configurator https://github.com/ExpressLRS/ExpressLRS-Configurator/releases
Firmware https://github.com/ExpressLRS/ExpressLRS/releases


New version ES900TX and ES900RX kit Package include:

  • 1x ES900 TX module (915MHz)
  • 1x ES900 RX module (915MHz)
  • 1x TX antenna (915MHz)
  • 2x RX antenna (915MHz)
  • 1x Molding JR Bay mounted case for TX module
  • 1x Heat sink
  • 1x Adapter wire
  • 1x 2006 Fan



  • MCU:ESP32+ESP8285
  • Dimension: 55mm*39mm*11mm
  • Weight: 9.2gram (only the TX module)
  • Antenna connector: SMA
  • VCC input: 5~13v, Recommend 5v~9v
  • RF Frequency optional: 915mhz or 868mhz(EU)
  • Maximum Output Power: <33dBm(For >27dBm operation, we recommend add a fan for force cooling)
  • Wifi update firmware function for ES900TX would be available in a short time.



  • MCU:ESP8285
  • VCC input: 5v
  • Operation current: ~100Ma
  • Rx To FC protocol: CRSF
  • RF Frequency optional: 915mhz or 868mhz(EU)
  • Dimension: 12mm*12mm*3mm
  • Weight: 0.60 gram (exclude antenna)
  • Antenna connector:  IPEX1
  • Telemetry output Power: <17dBm
  • RC7 Firmware for ES900RX download:
  • ExpressLRS RC7 firmware for ES900 RX 915MHz and 868MHz [update by wifi]