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It's finally here, the iFlight ELRS System! Extreme range and markets highest packet rate for lowest delay. Failsafes are a thing of the past.

ExpressLRS RX modules developed in close cooperation with the ExpressLRS Team with firmware targets already released.

Checkout the official ExpressLRS website:

Official ExpressLRS Quick Start:

Remember this is an Open Source Project and therefore free to use for everyone. If you want to support the Developers, please consider donating:



Improved circuit design

Market's lowest crystal frequency deviation (low packet loss, high frequency stability)

High-performance at 2400MHz or 900MHz (915 / 868 bands available)

Frequency tuned T-style dipole and SMD antenna options

Pre-soldered SH1.25 connector with 30mm wire length (Plug&Play for easy installation with iFlight FCs)

Performance and Compability

Make sure to install the antenna away from conductive or magnetic components (carbon, metal, motors).

Flash the latest firmware and follow the ELRS Community for updates, tutorials or contributions.

Use iFlight ELRS receivers coupled with our transmitter for maximum performance! We've probably achieved market's best crystal frequency stability at a very low frequency deviation (only 11KHz in total at 51.99976MHz on the crystal). Please checkout this article for further information



Antenna connector: IPEX(868MHz/915MHz/2.4G) / Molex 479480001 SMD antenna(2.4G w/SMD antenna)

Firmware: ExpressLRS iFlight 900RX(868MHz/918MHz) / ExpressLRS iFlight 2400RX(2.4G)

Frequency bands: 868MHz EU/915MHz FCC and 2.4GHz ISM

Telemetry Power: 17dbm (868/915MHz) / 20dbm2.4G

Dimension: 12*19.5mm

Connector: SH1.25 including 30mm wire (pre-soldered)

Interface: 5V GND RX TX

Input voltage: 5V

Protocol: CRSF

Weight: 1.2g


Packing List

1 x ExpressLRS Receiver

1 x Antenna

iFlight ELRS 2.4G RX+ Mini Antenna

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