RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver - 900MHz
by RadioMaster

The RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver is a highly versatile and ultra-compact receiver designed for ExpressLRS systems. Measuring just 20mm x 13mm, it operates on the 900MHz band (or 2.4GHz with an alternate package) to offer exceptional range and sensitivity for your RC models. Powered by the advanced Semtech LR1121 transceiver, this receiver ensures reliable, long-range performance in a lightweight and small form factor. Whether you're flying with 2.4GHz or 900MHz, the XR1 provides seamless connectivity, allowing you to focus on your flight without worrying about link quality.

Equipped with built-in Wi-Fi, the XR1 allows for easy configuration and firmware updates through an intuitive WebUI, accessible from either a PC or mobile device.

Key Features

• Telemetry RF Power: 100mW for strong communication range.
• Frequency Range: Supports 2.4GHz or Sub-G 900MHz, offering flexibility depending on your flight environment.
• Advanced MCU: Features the ESP32C3 high-performance microcontroller for enhanced control.
• Semtech LR1121 Transceiver: Ensures excellent range and sensitivity.
• Secondary UART Port: Allows for additional connectivity options.
• Easy Soldering: Equipped with castled pads for easier soldering during installation.

Specifications

• Item: XR1 Nano Multi-Frequency ExpressLRS Receiver
• Type: ISM2.4 or FCC915
• MCU: ESP32C3
• RF Chip: Semtech LR1121
• RF Connector: IPEX-1
• Antenna: 1x T-Antenna (Choice of 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)
• Dimensions: 20mm x 13mm x 3mm
• Firmware Version: ExpressLRS v3.5.1 pre-installed
• Bus Interfaces:
  • CRSF
  • UART

What's in the Box?

• 1 * XR1 Nano Multi-Frequency ExpressLRS Receiver
• 1 * T-Antenna (Choice of 2.4GHz, 900MHz, or Dual-band)
• 1 * CRSF Wire
• 3 * Heat-Shrinkable Tubes
• 1 * Manual Card