XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

The XR3 Receiver is a versatile, ultra-compact ExpressLRS receiver, measuring just 20 x 15mm. Powered by the advanced third-generation Semtech LR1121 transceiver, the XR3 operates seamlessly on 2.4GHz OR Sub-G 900MHz bands. Whether you're flying on 2.4GHz or 900MHz, the XR3 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 XR3 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.

Package Includes:

1x XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

2x T Antenna (type varies)

1x CRSF Wire

3x Heat-Shrinkable Tube

1x Manual Card

For more details and support, visit expresslrs.org.

Features:

• Antenna Diversity for improved signal stability and range
• ExpressLRS 2.4GHz or Sub-G 900MHz
• ESP32C3 high-performance MCU
• Semtech LR1121 Transceiver
• Additional UART port
• Secondary port for advanced functionality
• Castled pads for easy soldering

Specifications:

Item:  XR3 Nano Multi-Frequency Antenna Diversity ExpressLRS Receiver

Type: ISM2.4, FCC915

MCU: ESP32C3

RF Chip: LR1121

RF connector: IPEX-1 X 2

Antenna: 2x T-Antenna (Either 2.4GHz, 900Mhz or Dual-band depending on selected package)

Frequency Range: 2.4GHz / Sub-G 900MHz

Telemetry Power: 100mw

Maximum receive refresh rate: DK500Hz / K1000Hz

Minimum receiver refresh rate: 25Hz

Working voltage: DC 5.0 - 12.6v

Weight: 1.3g (without antenna)

Dimension: 22mm * 15mm * 4mm

Firmware Version: ExpressLRS v3.5.1 pre-installed

FW Target:  RadioMaster XR3 2.4/900  Diversity RX

Bus interface 1:  CRSF

Bus interface 2: UART

Antenna Diversity

The XR3 receiver features a Skyworks RFX2401C providing an LNA for improved receiver performance, a PA providing up to 100mW of telemetry performance and antenna switching for antenna diversity.

Tailored to Your Needs

The XR3 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!