XR4 Gemini Xrossband Dual-Band Receiver for ELRS Protocol
Available in stock (25)
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
Specification
- 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
Weight
Dimensions
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
Includes
- 1 * XR4 Gemini Xrossband Dual-Band Receiver
- 2 * Dual-Band T-Antenna
- 1 * CRSF Wire
- 3 * Heat-Shrinkable Tube
- 1 * Manual Card
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Product Specifications
Product Specifications
What's Included
What's Included
Shipping & Returns
Shipping & Returns
Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
Returns: We are happy to accept returns at Rotor Riot. As long as your item qualifies based on the guidelines below, you can print out a return form, fill out the requested information, and send the items back to us with the return form included. Once we have the package we will verify that the below guidelines are met, and then issue your refund.
⚠ FPV Regulatory Notice
⚠ FPV Regulatory Notice
The use and operation of this type of product in the USA and many other countries may require a license and some countries may forbid its use entirely. In the USA, you will need a "HAM" amateur radio license. Learn more about HAM licenses, and find a HAM license exam session in your area.
It is your responsibility to ensure that the use of this product meets the requirements imposed by your government's rules and regulations for RF devices.
Do not purchase this product if you are unsure of the government requirements or are not able to comply with them. Rotor Riot cannot be held responsible for your actions if you purchase and/or use this product in violation of your government's regulations. By agreeing to our terms and conditions during the check-out process, you also agree to have read and to understand this notice.
⚠ Remote ID Notice
⚠ Remote ID Notice
The FAA now requires most drones flown in US National Airspace to have Remote ID capability. This drone product does not comply with Standard Remote ID requirements and is therefore intended only for use Outside US National Airspace (ONAS). Such areas include FAA-Recognized Identification Areas (FRIA) and indoor spaces. It is your responsibility to ensure the use of this product complies with Remote ID requirements by flying ONAS locations or by installing a Remote ID Broadcast Module.
For more information on Remote ID visit:
https://www.faa.gov/uas/getting_started/remote_id/drone_pilots
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Shoot our team an email & we’ll get back to you ASAP
How long does it take to process an order?
How long does it take to process an order?
Orders are typically processed within 1–2 business days. You will receive a confirmation email with tracking details once your order has been shipped. Please note that processing times may be slightly longer during high-demand periods or sales events.
Do you ship internationally?
Do you ship internationally?
Yes, we offer international shipping to most countries. Shipping rates and delivery times vary depending on the destination. Any applicable customs duties or taxes will be the responsibility of the recipient.
What is your return policy?
What is your return policy?
We are happy to accept returns at Rotor Riot. As long as your item qualifies based on the guidelines below, you can print out a return form, fill out the requested information, and send the items back to us with the return form included. Once we have the package we will verify that the below guidelines are met, and then issue your refund. If you received an incorrect item, or if your item is defective it is not a return, and you will need to contact customer support to open a ticket. If you have any further questions about how this process is handled please contact customer support for details.
- An item is eligible for return if it is new and unopened. This means that all of the original manufacturer’s packaging is still intact.
- Returns need to be shipped back to us within 15 days of receiving the items for a full refund. After this time you will only be eligible for store credit. (All DJI Avata Bundles must be returned within 7 days)
- Refunds are only issued after the item has been received and processed by our staff. This can take up to 3 business days after we receive the package.
- Once a refund is approved you will be notified by email. Please allow up to three days for this to be processed by your banking institution.
- Built-to-order drones that are returned are subject to a 25% restocking fee. If an order is returned to us due to customs or import fees not being paid the items are subject to a 25% restocking fee.
- Returns will always go back into the account that was used at checkout.