Radiomaster XR1 2.4GHz Sub-G 900MHz Dual-band Semtech LR1121 Transceiver Nano Multi-Frequency ExpressLRS Receiver

Note:

About Maximum Packet rate

Dual-Band Version: DK500Hz / K1000Hz

2.4GHz Only Version: F1000Hz

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.

For more details and support, visit expresslrs.org.

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 FCC915

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