RadioMaster XR2 Nano 2.4GHz ExpressLRS Receiver

XR2 Nano User Manual Product Description:The XR2 Receiver is an ultra-compact, high-performance 2.4GHz ExpressLRS receiver, engineered for maximum efficiency in micro builds, Whoops, and fixed-wing models. Featuring a built-in tower antenna, it delivers excellent reception in a tiny 16×12mm footprint, weighing just 0.8g. Powered by the advanced Semtech LR1121 transceiver, the XR2 supports DK500Hz mode, offering ultra-low latency and reliable link performance for ELRS pilots seeking top-tier responsiveness. The integrated Wi-Fi module enables easy firmware updates and configuration through a WebUI—no cables required. Key Features:Integrated 2.4GHz tower antenna for compact, high-gain receptionExpressLRS 2.4GHz protocol supportHigh-performance ESP32C3 MCUAdvanced Semtech LR1121 transceiver (3rd gen)Secondary UART port for expanded connectivityCastled solder pads for easy and secure wiring Specifications:Product: XR2 Nano 2.4GHz ExpressLRS ReceiverType: ISM 2.4GHzMCU: ESP32C3RF Chip: Semtech LR1121Antenna: Integrated 2.4GHz Tower AntennaFrequency Range: 2.400 – 2.479GHzTelemetry Power: 10mWMax Packet Rate: DK500HzMin Packet Refresh Rate: 50HzOperating Voltage: 5VWeight: 0.8gDimensions: 16mm × 12mm × 6mmFirmware Version: ExpressLRS v3.5.1 (pre-installed)Firmware Target: RadioMaster XR2 2.4 RXBus Interfaces:– CRSF– UART Packages 1 * XR2 Nano 2.4GHz ExpressLRS Receiver1 * CRSF Wire3 * Heat-Shrinkable Tube1 * Manual Card