RadioMaster XR3 Nano Multi‑Frequency Antenna Diversity ExpressLRS Receiver

The RadioMaster XR3 Nano Multi-Frequency Receiver is like a compact secret agent — small but exceptionally capable. Operating dual bands (2.4 GHz and 900 MHz) via Antenna Diversity, it ensures unmatched range and resilience, even when one band is compromised.

With built-in Wi-Fi, firmware updates and configuration are seamless — just connect via your browser, no wires needed.

Despite its tiny footprint — just 1.3 g (without antennas) and 22×15×4 mm — the XR3 delivers serious performance. Whether it’s micro freestyle, racing, or long-range exploration, it keeps you connected.

More than a receiver — it’s your compact solution for reliable remote control in the smallest package.

Key Specifications:

• Receiver: RadioMaster XR3 Nano Multi-Frequency ExpressLRS Receiver

• MCU: ESP32C3

• RF Chip: Semtech LR1121

• Frequency Range: 2.4 GHz / Sub-G 900 MHz

• Antenna Diversity: Yes (dual antenna ports)

• Telemetry Power: up to 100 mW

• Refresh Rate: DK 500 Hz / K 1000 Hz; Min 25 Hz

• Operating Voltage: 5.0–12.6 V DC

• Interfaces: CRSF + UART

• Antennas Included: 2× T-antenna (choice of 2.4 GHz, 900 MHz, or Dual-Band)

• Weight: 1.3 g (without antennas)

• Dimensions: 22 × 15 × 4 mm (20×20 mm mounting)

• Firmware: ExpressLRS v3.5.1 pre-installed

• Features: Wi-Fi WebUI, castellated pads