SKU: 71111485099

RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver

Sale price$41.39 Regular price$45.99
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Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

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Description

RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS ReceiverIntroducing 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.

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.

Check out all our ExpressLRS ProductsReceivers, and the rest of our RadioMaster Products!

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

Specifications:

  • 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

Package Includes:

  • 1 * XR4 Gemini Xrossband Dual-Band Receiver
  • 2 * Dual-Band T-Antenna
  • 1 * CRSF Wire
  • 3 * Heat-Shrinkable Tube
  • 1 * Manual Card

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 71111485099

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    Clint
    Alexandria, US
    ★★★★★ 5
    iPad case is great
    Color: Black
    Fits great. Like the stand feature on the back
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    Reviewed in the United States on May 30, 2026
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    Kat
    Birmingham, US
    ★★★★★ 5
    Great quality case and keyboard
    Color: Purple, Color: Purple
    Super good quality case, I was actually surprised since it’s such a good price. It fit my 10.9 inch perfectly! Keyboard has magnetic attachment to the case which is super handy, and it connected with Bluetooth seamlessly. Keyboard isn’t silent, it’s on the louder side, but not too loud at all and it doesn’t bother me at all because I prefer clickier keyboards. Oh also something that’s really cool is that you can change the colors of the keyboard, love that!
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    Reviewed in the United States on April 10, 2026
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    User123456
    San Leandro, US
    ★★★★★ 5
    Amazing!
    Color: Midnight Green
    The Hamile Keyboard Case for iPad (11th & 10th Generation) is a practical accessory for turning your iPad into a more laptop-like setup. Designed with a detachable wireless keyboard and protective case, it’s aimed at students, professionals, and anyone who types frequently on their tablet. One of its most appealing features is the 7-color backlit keyboard, which makes typing easier in low-light environments while also adding a customizable, stylish look. The backlighting can usually be adjusted in brightness and color, making it both functional and fun to use. The keys are generally responsive and comfortable enough for everyday typing tasks like emails, notes, and document work. The case itself provides decent protection for the iPad, helping guard against scratches and minor bumps. It also holds the tablet at a stable viewing angle, which is useful for video calls, studying, or streaming. The wireless connection is typically simple to set up via Bluetooth, and the keyboard can be detached when not needed.
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    Reviewed in the United States on May 21, 2026
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    Ari Love
    Fort Morgan, US
    ★★★★★ 5
    No need to tap my Nails on the screen anymore!
    Color: Pink, Color: Pink
    Cute, convenient, and definitely needed! I use it every day to carry my emotional support device The keyboard case is sturdy, easy to use, and makes it so much more convenient to take my my girl everywhere. Extra added protection! (I’m clumsy and my iPad has fell quite a few times!) the keyboard works great, I typed a lot of emails and docs! Very happy with this purchase!
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    Reviewed in the United States on June 5, 2026
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    Angela C
    Draper, US
    ★★★★★ 5
    The blue is perfect!
    Color: Navy Blue
    The best quality iPad cover I have ever had. And the blue is so pretty!!!! The keyboard synced quickly and has soft keys.
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    Reviewed in the United States on April 30, 2026

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