SKU: 71111485099

RadioMaster XR4 Gemini Xrossband Dual-Band ExpressLRS Receiver

Sale price$41.39 Regular price$45.99
Save 10%

Pay in installments of $11.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

    Discover Niche Categories That Outsell

    Top-Converting Item to Boost Your Average Order

    4.3 ★★★★★
    Based on 21 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    J
    Verified Purchase
    Jenny Atkinson
    Whiting, US
    ★★★★★ 5
    I had had it with cheaply functioning wine bottle openers!
    Color: Silver, Number of Items: 1
    I like a manually functioning wine bottle opener. This one is smooth and easy to use and I didn't feel like I would cut my finger when removing the cork from the opener. Would definitely recommend!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 20, 2026
    R
    Verified Purchase
    Rhonda B.
    Alexandria, US
    ★★★★★ 5
    Great price and feels like quality.
    Color: Silver, Number of Items: 1
    Solid, feels like quality. Great price!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 5, 2026
    J
    Verified Purchase
    Jeff Panting
    Houston, US
    ★★★★★ 3
    Mid
    Color: Silver, Number of Items: 1
    Not total garbage, but not high quality either. Looks, feels, and performs like a cheap wine opener.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 15, 2026
    M
    Verified Purchase
    Michelle Kim
    Bozeman, US
    ★★★★★ 5
    A Surprisingly Premium, No-Nonsense Corkscrew That Just Works
    Color: Silver, Number of Items: 1
    I’ve gone through more corkscrews than I care to admit. Some cute, some clever, some that looked great on the countertop but absolutely fell apart the second they met a stubborn cork. This opener immediately impressed me with how solid and dependable it feels. The zinc alloy gives it a weight and sturdiness that you notice the moment you pick it up, and it has that “built to last” vibe you don’t usually get at this price point. What I love most is that there’s no learning curve, no gimmicks, and no unnecessary parts that will eventually loosen or snap. It’s the kind of tool that feels familiar but elevated. The turning mechanism is smooth, controlled, and surprisingly effortless, even on older bottles where the cork can be unpredictable. The wings rise evenly, don’t wobble, and give you a ton of leverage, so removing the cork feels almost too easy. It also doubles as a great bottle opener, and I appreciate that it actually feels like a bottle opener you can trust rather than a flimsy add-on tucked in as an afterthought. If you want something flashy for your bar cart, this may not be the centerpiece. But if you’re looking for a reliable, heavy-duty corkscrew that quietly outperforms the pretty ones, this is it. An incredibly solid value and easily one of the most dependable openers I’ve owned.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 4, 2025
    T
    Verified Purchase
    Tightwad in KC
    Lowell, US
    ★★★★★ 5
    Classic design and good sturdy quality
    Color: Silver, Number of Items: 2
    Let's just address the elephant in the room. My family says I am cheap, but I call it thrifty. Either way, I bought a couple of cork screws earlier that left like they would break at any moment when pushing down the arms, and after a few bottles, one arm did bend. So this time, i paid attention to the reviews and chose these cork screws as the review said they are solid quality. The review was correct. This design is pretty fool proof and easy for anyone to use. You do not need super human strength to pull the cork. Just remove the foil, screw the sharp coil into the cork until the arms have reached the top of their range, the place the bottle on a hard surface and push both arms down. Easy peasy. The bad openers I mentioned earlier did not have anything on the opener arms and the metal was thin. It did not provide a good feel. These cork screws have thicker arms and have a rubber grip on them which provides a much more comfortable operation. I would definitely recommend these cork screws for quality and value.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 14, 2025

    recommand products