Advanced Dual-Band Technology: R3s dual-band technology enables superior connectivity, operating seamlessly at 2.4GHz and 900Mhz. This feature ensures a stable, interference-free connection, making it an ideal choice for remote control enthusiasts who seek reliability Compact and lightweight design: Designed for portability and easy installation, the nano-sized receiver can be easily installed into a variety of devices without adding bulk Multi-frequency capability: The R3 receiver is able to support multiple frequencies, providing fleibility and improved signal stability to meet a variety of operating needs and environments Perfectly compatible with all for RadioMaster EpressLRS remote controls and high-frequency heads Suitable for operation in remote comple environments, low noise amplifier to improve sensitivity; power amplifier to increase return distance Item: R3 Nano Multi-Frequency Antenna Diversity EpressLRS Receiver Type: ISM2.4, FCC915 MCU: ESP32C3 RF Chip: LR1121 RF connector: IPE-1 2 Antenna: 2 T-Antenna Frequency Range: 2.4GHz / Sub-G 900MHz Telemetry Power: 100mw Maimum receive refresh rate: DK500Hz / K1000Hz Minimum receiver refresh rate: 25Hz Working voltage: DC 5.0 - 12.6v Firmware Version: EpressLRS v3.5.1 pre-installed FW Target: for RadioMaster R3 2.4/900 Diversity R Bus interface 1: CRSF Bus interface 2: UART The product appearance and printed words may vary depending on the batch, but this does not affect use Colour:As Shown Material:PCB Package Contents: 1 R3 Receiver 2 T-Antennas 3 Heat Shrink Tubes 1 CRSF Cable Only the above package content, other products are not included.