The XR1 Receiver is a versatile, ultra-compact ExpressLRS receiver, measuring just 20 x 13mm. Powered by the advanced third-generation Semtech LR1121 transceiver, the XR1 operates seamlessly on 2.4GHz OR Sub-G 900MHz bands. Whether you’re flying on 2.4GHz or 900MHz, the XR1 delivers exceptional range and sensitivity in a small, lightweight package — perfect for any build. With the reliability of ExpressLRS, you can focus on flying without worrying about link quality.

Designed for convenience, the XR1 features built-in Wi-Fi for effortless configuration and firmware updates. Access and manage settings through an intuitive WebUI on your PC or mobile device with ease.

Features

• Telemetry RF power: 100mW
• ExpressLRS 2.4GHz or Sub-G 900MHz
• ESP32C3 high-performance MCU
• Semtech LR1121 2.4GHz & Sub-G 900MHz Transceiver
• Secondary UART port
• Castled pads for easy soldering

Specs

• Item: XR1 Nano Multi-Frequency ExpressLRS Receiver
• Type: ISM2.4 or FCC915
• MCU: ESP32C3
• Chip de RF: Semtech LR1121
• RF connector: IPEX-1
• Antenna: 1x T-Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)
• Frequency Range: 2.4GHz or Sub-G 900MHz
• Telemetry Power: 100mW
• Maximum Packet rate: DK500Hz / K1000Hz
• Minimum Packet refresh rate: 50Hz
• Working voltage: 5V
• Weight: 1.0g (without antenna)
• Dimension: 20mm * 13mm * 3mm
• Firmware Version: ExpressLRS v3.5.1 pre-installed
• FW Target: RadioMaster XR1 2.4/900 RX
• Bus interface 1: CRSF
• Bus interface 2: UART