The XR4 Receiver is a dual-band solution with dual LR1121 RF transceivers, supporting the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It operates on 2.4GHz and Sub-G 900MHz with dual T-type antennas for superior reception and stability.
About this Product
The XR4 Receiver is a dual-band solution with dual LR1121 RF transceivers, supporting the advanced ExpressLRS Gemini Xrossband protocol (Gem-X). It operates on 2.4GHz and Sub-G 900MHz with dual T-type antennas for superior reception and stability. With two RF circuits, it supports Gemini single-frequency and Xrossband dual-band modes. A built-in Wi-Fi module allows easy firmware updates and configuration via WebUI. Compact, lightweight, and designed for ultra-low latency, the XR4 ensures a stable RF link, making it perfect for drones and fixed-wing models in demanding environments.
Features
- Compact and Lightweight
- Versatile Operation Modes
- Integrated Wi-Fi Module
- Dual T-Type Antennas
- True Diversity Design
- Dual-Band Support
- Advanced Protocol
- Ultra-Low Latency
- High Refresh Rate
- Reliable RF Link


Specifications
- Maximum Receive Refresh Rate: DK500Hz / K1000Hz
- Firmware Version: ExpressLRS v3.5.1 pre-installed
- Antenna: Dual-Band T Antenna x 2 (Included)
- Frequency Range: 2.4GHz / Sub-G 900MHz
- Item: XR4 ExpressLRS Xrossband Receiver
- Firmware Target: XR4 2.4/900 Gemini RX
- Minimum Receiver Refresh Rate: 50Hz
- Dimensions: 22mm x 18mm x 4mm
- Working Voltage: DC 5.0 - 12.6V
- Weight: 1.7g (without antenna)
- Telemetry Power: 100mW
- RF Chip: Semtech LR1121
- RF Connector: IPEX-1 x 2
- Bus Interface 2: UART
- Bus Interface 1: CRSF
- MCU: ESP32D4
Includes
1x RadioMaster XR4 Gemini Xrossband ELRS 2.4GHz/900MHz Dual-Band Diversity Receiver
More information
| SKU | 22852 |
|---|---|
| UPC (GTIN) | 723326370120 |










