The XR2 Receiver is a nano-sized powerhouse engineered for 2.4GHz ExpressLRS, featuring an integrated tower antenna that delivers exceptional reception within its ultra-compact design. With a footprint of just 16x12mm and a lightweight of only 0.8g, it fits seamlessly into even the most space-constrained builds. Driven by the advanced Semtech LR1121 transceiver (third generation), the XR2 offers compatibility with all ELRS 2.4GHz transmitters and unlocks the benefits of DK500Hz mode for LR1121-based systems, ensuring unparalleled reliability and responsiveness. The built-in Wi-Fi module simplifies firmware updates and configuration via a WebUI on your PC or mobile device. With ultra-low latency and high refresh rates, the XR2 stands out in Whoops, micro drones, and fixed-wing models, where every gram and millimeter counts for peak performance.

Features

• Integrated 2.4GHz tower antenna
• ExpressLRS 2,4 GHz
• ESP32C3 high-performance MCU
• Semtech LR1121 Transceiver 
• Secondary UART port
• Castled pads for easy soldering

Specs

• Item: XR2 Nano 2.4GHz ExpressLRS Receiver 
• Type: ISM2.4
• MCU: ESP32C3
• Chip de RF: Semtech LR1121
• RF connector: IPEX-1
• Antenna: 1x T-Antenna 2,4 GHz
• Frequency Range: 2.400 - 2.479GHz
• Telemetry Power: 100mW
• Maximum Packet rate: DK500Hz
• Minimum Packet refresh rate: 50Hz
• Working voltage: 5V
• Weight: 1.0g (without antenna)
• Dimensión: 16 mm * 12 mm * 6 mm
• Firmware Version: ExpressLRS v3.5.1 pre-installed
• FW Target: RadioMaster XR1 2.4/900 RX
• Bus interface 1: CRSF
• Bus interface 2: UART