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iFlight ExpressLRS ELRS Diversity Receiver ELRS 900MHz 500mW True Diversity RX / ELRS 2.4GHz 250mW True Diversity RX for FPV

iFlight ExpressLRS ELRS Diversity Receiver ELRS 900MHz 500mW True Diversity RX / ELRS 2.4GHz 250mW True Diversity RX for FPV

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Specifications

Brand Name
IFLIGHT
Compatible Drone Brand
GoPro
High-concerned chemical
None
Origin
Mainland China
Size
24.3*18.5*6.5mm
Weight
5g
Model Number
ExpressLRS ELRS Diversity
Package
Yes

Product Description

NOTE: If you want to use Gemini mode, you need to use a TX that supports Gemini mode.

Description

  • iFlight ELRS diversity receiver is a true dual-antenna diversity receiver developed in close cooperation with the ExpressLRS Team. ExpressLRS is known for its long-range operation, low latency, and high-power telemetry feedback capabilities.

  • The ELRS diversity receiver features well-placed dual antennas with shielding covers, enhancing its resistance to interference, widening signal reception, and ensuring a more stable connection compared to conventional single-antenna receiver systems. 

  • It incorporates a TCXO temperature-compensated crystal oscillator to prevent frequency shifts caused by temperature variations, with telemetry power reaching up to 500mW. It significantly meets the reliability requirements for long-distance flights, aerial photography, or FPV freestyle maneuvers.

Features

  • Gemini mode and True Diversity mode are compatible, better reception effect

  • Integrated shields can protect electronic components and enhance anti-interference capabilities.

  • Newly upgraded Temperature Compensated Crystal Oscillator, lower packet loss, high-frequency stability

  • Up to power 250mW telemetry transmission, resulting in stronger telemetry signals and significantly reducing instances of telemetry loss.

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

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. Please checkout this article for further information //github.com/ExpressLRS/ExpressLRS/wiki/Crystal-Oscillator-(XO)-Frequency-Error

Band Option

  • The 900MHz as well as 2400MHz band have outstanding performance and long range capabilities. If you're not sure what to get, please checkout the official ELRS Long Range Competition to see what has been achieved. //www.expresslrs.org/2.0/info/long-range/

  • What can you expect? Due to local regulations, the 900MHz FCC region seems to have a better performance than the 868MHz EU region. The 2400MHz band works great in any region, has a higher packet rate up to 500hz. This is not a common 2400MHz protocol and cannot be compared to anything prior on the market.

Specifications

  • MCU: ESP32-Pico D4

  • Receiver Type: Gemini/True Diversity

  • Firmware: iF 900 500mW GRX (868MHz/900MHz) / iF 2G4 250mW GRX(2.4G)

  • Frequency bands: 868MHz EU/900MHz FCC and 2.4GHz ISM

  • Telemetry Power: 100-500mW (20-27dBm) (868/900MHz)  / 50-250mW (17-24dBm)(2.4G)

  • Dimension: 24.3*18.5*6.5mm (868/900MHz) / 24.5*18.6*6.3mm(2.4G)

  • Protocol: CRSF

  • LNA: N/A(868/900MHz) / YES (2.4G)

  • Weight: 4.2g (868/900MHz) / 3.3g (2.4G)

Packing List

  • 1 x ExpressLRS True Diversity Receiver 

  • 2 x Antennas



Pros & Cons

Pros

  • Available in two popular frequency variants for flexible long-range FPV flying
  • Features true dual-antenna diversity to reduce signal dropouts during flight
  • Extremely compact and lightweight at just 5g, perfect for small and micro FPV drone builds
  • Developed in partnership with the ExpressLRS Team for reliable, up-to-date firmware support

Cons

  • Gemini mode functionality requires a compatible ExpressLRS transmitter, adding extra cost for users wanting this feature
  • Listed as only compatible with GoPro-brand drone setups, limiting general FPV drone use
  • Does not include mounting hardware or adhesive pads, so users will need to purchase these accessories separately
  • Only compatible with FPV drones that support the ExpressLRS ELRS protocol, excluding older radio systems

Common Questions

What materials are used to construct this iFlight ELRS receiver?

Product specifications do not list specific construction materials, but it is a compact, lightweight PCB-based receiver designed for FPV drone use.

What are the physical dimensions and weight of this receiver?

It measures 24.3*18.5*6.5mm and weighs just 5g, making it ideal for compact FPV drone builds.

What communication frequencies and power outputs do these receiver variants offer?

Two variants are available: a 900MHz 500mW true diversity receiver and a 2.4GHz 250mW true diversity receiver, both developed in partnership with the ExpressLRS Team.

What are the key features and benefits of this FPV receiver?

It offers long-range operation, low latency, and true dual-antenna diversity for reliable FPV signal reception, with support for ExpressLRS firmware and Gemini mode when used with a compatible transmitter.

What is included in the standard shipping package for this receiver?

The official shipping package includes the iFlight ELRS diversity receiver and all official certified components as part of the standard product packaging.

Product information last updated on February 20, 2026