The XR2 Receiver is a nano-sized powerhouse engineered for 2.4GHz ExpressLRS, featuring an integrated tower antenna that delivers exceptional reception within its ultra-compact design. With a footprint of just 16x12mm and a lightweight of only 0.8g, it fits seamlessly into even the most space-constrained builds. Driven by the advanced Semtech LR1121 transceiver (third generation), the XR2 offers compatibility with all ELRS 2.4GHz transmitters and unlocks the benefits of DK500Hz mode for LR1121-based systems, ensuring unparalleled reliability and responsiveness. The built-in Wi-Fi module simplifies firmware updates and configuration via a WebUI on your PC or mobile device. With ultra-low latency and high refresh rates, the XR2 stands out in Whoops, micro drones, and fixed-wing models, where every gram and millimeter counts for peak performance.

FEATURES

• Integrated 2.4GHz tower antenna
• ExpressLRS 2.4GHz
• ESP32C3 high-performance MCU
• Semtech LR1121 Transceiver
• Secondary UART port for advanced functionality
• Castled pads for easy soldering

Specifications:

Type: ISM2.4

MCU: ESP32C3

RF Chip: Semtech LR1121

Antenna: Integrated 2.4GHz Tower Antenna

Frequency Range: 2.400 - 2.479GHz

Telemetry Power: 10mW

Maximum Packet rate: DK500Hz

Minimum Packet refresh rate: 50Hz

Working voltage: 5V

Weight: 0.8g

Dimension: 16mm * 12mm * 6mm

Firmware Version: ExpressLRS v3.5.1 pre-installed

FW Target:  RadioMaster XR2 2.4 RX

Bus interface 1: CRSF

Bus interface 2: UART

Package Included:

1x XR2 Nano 2.4GHz ExpressLRS Receiver

1x CRSF Wire

3x Heat-Shrinkable Tube

1x Manual Card