V. Bartkevičiaus enterprise "Valsena" founded on 4'Th of June 1996. Company is specializing in manufacturing of modern industrial electronic devices. The main products are called MPC (Multi Protocol Converters) and could be ordered with a different number and wide range of interfaces and protocols in a single device. Single MPC can have up to 9 interfaces, Analog and Digital IN/OUT and work as a Protocol converter, Router, Data logger, Alarm system and etc.. The first of MPC has been made in 1999's and are acknowledged and widely used for remote monitoring and control in supermarkets, GAS distribution substations, Heat stations, optimizing work of refrigerators and more..