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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.
Specification: Brand: RadioMaster Item: XR4 Gemini Xrossband Receiver MCU: ESP32D4 RF Chip: Semtech LR1121 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
Feature: * True Diversity & Dual-Band
* Unmatched reliability with ExpressLRS Gemini Xrossband
Roymall C.o.
Kado gratis
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Règleman retou
Coupon Code
Direct purchase from the factory 
Radios & Receiver
RC Parts
