Radiomaster XR1 Nano Multi-Frequency ExpressLRS Receiver – Dual Band

The RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver is an ultra-compact, dual-band receiver designed for FPV drones, utilizing a third-generation chipset to support both 2.4GHz and 900MHz frequencies. It offers high telemetry power and integrated Wi-Fi for easy maintenance, making it a versatile choice for everything from micro quads to long-range builds.

• Dual-Band Capability: Powered by the Semtech LR1121 transceiver, it can operate on either the 2.4GHz ISM or Sub-G 900MHz (868/915MHz) bands.
• High Telemetry Power: Provides up to 100mW of telemetry RF power, ensuring robust feedback and link stability over long distances.
• Built-in Wi-Fi: Includes an integrated Wi-Fi module for effortless firmware updates and configuration via an intuitive WebUI on mobile or PC.
• Nano Form Factor: Measures just 20 x 13mm and weighs approximately 1.0g, fitting easily into space-constrained drone frames.
• Advanced Connectivity: Features a secondary UART port for potential expansion and castled pads to simplify the soldering process.

• MCU: ESP32C3 high-performance microcontroller.
• RF Chip: Semtech LR1121.
• Antenna Connector: IPEX-1.
• Maximum Packet Rate: DK500Hz (at 900MHz) / K1000Hz (at 2.4GHz).
• Minimum Refresh Rate: 50Hz.
• Working Voltage: 5V DC.
• Dimensions: 20mm * 13mm * 3mm.
• Weight: 1.0g (without antenna).
• Pre-installed Firmware: ExpressLRS v3.5.1.
• Bus Interface: CRSF (Bus 1) and UART (Bus 2).