Radiomaster XR1 Nano Multi-Frequency ExpressLRS Receiver

The XR1 Receiver is a versatile, ultra-compact ExpressLRS receiver measuring just 20 × 13 mm. Powered by the third-generation Semtech LR1121 transceiver, the XR1 operates on either the 2.4 GHz or Sub-G 900 MHz bands. Whether using 2.4 GHz or 900 MHz, the XR1 delivers strong range and sensitivity in a small, lightweight package—well suited for a wide range of builds. With the reliability of ExpressLRS, you can focus on operation 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

Specification

• Item: XR1 Nano Multi-Frequency  ExpressLRS Receiver
• Type: ISM2.4 or CE868
• MCU: ESP32C3
• RF chip: 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

Tailored to Your Needs

The XR1 Receiver is available in three configurations, ensuring you have the flexibility to meet your exact requirements: Choose between 2.4GHz, Sub-G 900MHz, or a Dual-Band antenna that allows switching between 2.4Ghz and 900Mhz without an antenna change! All antenna types are available as optional accessories so you can change frequency at a later stage without needing to purchase a new receiver!

Package Includes

• 1 * XR1 Nano Multi-Frequency ExpressLRS Receiver
• 1 * T Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)
• 1 * CRSF wire
• 3 * Heat-Shrinkable Tube
• 1 * Manual Card