XR1 Nano Multi-Frequency ExpressLRS Receiver
XR1 Nano Multi-Frequency ExpressLRS Receiver
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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
| Parameter | Details |
|---|---|
| Item | XR1 Nano Multi-Frequency ExpressLRS Receiver |
| Type | ISM 2.4 or CE868 |
| MCU | ESP32-C3 |
| RF Chip | Semtech LR1121 |
| RF Connector | IPEX-1 |
| Antenna | 1x T-Antenna (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 Rate | 50Hz |
| Working Voltage | DC 5V |
| Weight | 1.0g (without antenna) |
| Dimensions | 20 × 13 × 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 |
Flexible Frequency Choices
The XR1 Receiver comes with three antenna options to suit different setups: 2.4GHz, Sub-G 900MHz, or Dual-Band.
Choose the Dual-Band option if you need the flexibility to switch between 2.4GHz and 900MHz without changing the antenna.
All antenna versions are also available separately as optional accessories, so you can adapt the XR1 to a different frequency band later without replacing the 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
