RadioMaster XR1 Nano Multi-Frequency ExpressLRS Receiver

Download User XR1 Manual 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 Package: 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