The Vinci Expert is the next generation of it's predecessor The Vinci. Device helps to monitor transmittion over RS232, RS485, RS422 and over fiber optical cable in order to make communication between devices. A professional tool is especially helpful in product development, testing and commissioning stages. The main inspiration for the industrial design - illustration "Vitruvian Man" by Leonardo da Vinci. The positioning of components, buttons and LED is calculated according to the golden section ratio, Fibonacci sequence. Integration of magnets let product to stick to various metal surfaces.