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

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

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