RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver
£34.99 Inc. VAT
Compatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini & Gemini Xrossband (Gem-X).
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Introducing the XR4 XrossBand Receiver – The Pinnacle of compact Dual-Band Performance
The XR4 Receiver is a cutting-edge true diversity dual-band receiver featuring dual LR1121 RF transceivers, designed to leverage the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It seamlessly supports both the 2.4GHz and Sub-G 900MHz bands, and its dual T-type antennas provide superior reception sensitivity and connection stability for optimal performance.
Built with two independent RF circuits, the XR4 offers versatile operation modes, allowing you to switch between Gemini single-frequency or Xrossband dual-band modes, and can be tailored to your specific needs. The integrated Wi-Fi module simplifies firmware updates and configuration via a user-friendly WebUI on your PC or mobile device.
With ultra-low latency and a high refresh rate, the XR4 excels in delivering a stable, rock-solid RF link, even in demanding long-range or challenging environments. Its compact, lightweight design is perfect for drones, and fixed-wing models, offering reliable connectivity in critical situations where every signal matters. The XR4 ensures you maintain the most secure and robust RF link available, providing unbeatable reliability in the most demanding conditions.
For more details and support, visit expresslrs.org.
Features
- True Diversity & Dual-Band
- Unmatched reliability with ExpressLRS Gemini Xrossband
- Compatible with ExpressLRS 2.4GHz, Sub-G 900MHz, Gemini & Gemini Xrossband (Gem-X)
- ESP32D4 high-performance MCU
- Twin Semtech LR1121 Transceiver
- Secondary UART port for advanced functionality
- Castled pads for easy soldering
Associated Products
- XR1 Nano Multi-Frequency ExpressLRS Receiver
- XR2 Nano 2.4GHz ExpressLRS Receiver
- XR3 Nano Multi-Frequency ExpressLRS Receiver
- 2.4GHz / Sub-G 900MHz Dual-Band T Antenna
- UFL 2.4Ghz T Antenna 65mm/95mm for ELRS Receivers
- UFL 915/868MHz T & Y Antenna for BR Series Receivers
- Item: XR4 Gemini Xrossband Dual-Band Receiver
- MCU: ESP32D4
- RF Chip: LR1121 x 2
- RF connector: IPEX-1 X 2
- Antenna: Dual-Band T Antenna x 2 (Included)
- Frequency Range: 2.4GHz / Sub-G 900MHz
- Telemetry Power: 100mw
- Maximum receive refresh rate: DK500Hz / K1000Hz
- Minimum receiver refresh rate: 50Hz
- Working voltage: DC 5.0 – 12.6v
- Weight: 1.7g (without antenna)
- Dimension: 22mm * 18mm * 4mm
- Firmware Version: ExpressLRS v3.5.1 pre-installed
- FW Target: RadioMaster XR4 2.4/900 Gemini RX
- Bus interface 1: CRSF
- Bus interface 2: UART
Included:
- 1 x XR4 Gemini Xrossband Dual-Band Receiver
- 2 x Dual-Band T-Antenna
- 1 x CRSF Wire
- 3 x Heat-Shrinkable Tube
- 1 x Manual Card
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SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
Next Dispatch: Today
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Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
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