Features: Support CRSF communication protocol, stable signal, ensuring efficient and stable data transmission. Multiple band support (2.4G/915MHz), suitable for flight needs in different environment. The ELRS NANORX design is small, suitable for various small space applications. Low latencies connection provides a fast response flight experience. Highly compatibility, can be used in conjunction with different remote controlled and flight controllers. Specifications: Material: Printed Circuit Board Type: 915MHz, 2.4G(optional) Input voltage: 4-5.5V Antenna Connector: Ipex1 Receiving refreshing rate: up to 500Hz Minimum receive refreshing rate: 25Hz Working Agreement: CRSF Size(not include antenna): 10.5x17mm ELRS 2.4G Receiver: Firmware: BetaFPV 2400Nano Type: ISM ELRS 915 Receiver: Firmware: BetaFPV 900RX Package Includes: 1x Cyclone CRSF Receiver with Antenna Kit note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.