RadioMaster XR1 Nano Multi‑Frequency ExpressLRS Receiver, 2.4GHz + 900MHz

Within its nano frame lies immense capability—the XR1 Nano Multi-Frequency Receiver delivers versatile performance with support for both 2.4 GHz and sub-G 900 MHz bands, optimizing range and minimizing interference exposure.

Featuring onboard Wi-Fi, this receiver transforms firmware updates and configuration into a seamless process—simply connect via WebUI on any browser and you're instantly in control.

Despite its featherweight build—just 1 g without antenna and compact dimensions of 20×13×3 mm—the XR1 packs advanced tech suitable for incredibly tight builds where every gram matters.

For pilots seeking maximum flexibility, extended range, and effortless setup, this tiny receiver delivers big-time performance.

Key Specifications:

• Receiver: RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver

• MCU: ESP32C3

• RF Chip: Semtech LR1121 (supports 2.4 GHz and sub-G 900 MHz)

• Telemetry Output Power: up to 100 mW

• Max Packet Rate: DK 500 Hz / K 1000 Hz; Min: 50 Hz

• Operating Voltage: 5 V DC

• Interfaces: CRSF + secondary UART

• Antenna Connector: IPEX-1

• Antenna Included: 1× T-antenna (2.4 GHz, 900 MHz or Dual-Band option)

• Weight: 1.0 g (receiver only)

• Dimensions: 20 × 13 × 3 mm

• Firmware: ExpressLRS v3.5.1 pre-installed

• Features: Wi-Fi WebUI, multi-frequency support, ultra-compact design