Features: ata logging: Openlog data logger flight control board can realize serial data logging, record the key data in flight, similars to the flight black box function. Storage: with large-capacity memory, it can save data for a long time and ensures data integrity and security. High reliability: Stable data recording function ensures accurate recording of flight data, which is convenient for users to analyze. Multi-interface support: support a variety of serial data interfaces, applicable to all types of flight control boards and aircraft equipment, strong compatibility. Simple to operate: easy to operate, just connect to the serial port of the flight control board to start data logging, no need for complex settings. Specifications: Item：Openlog Serial Data Logger Size：about 20x20mm/0.79x0.79in Power: 3.3-5V 6A Storage： Fat16/Fat32 64G Positioning Hole：2mm Package Includes: 1Set Openlog Serial Data Logger note: Due to problem of lighting effect and shooting, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.