The "Pixel" company was founded in 1990 by the specialists of the laboratory of noncontact diagnostics of the "Physical Institute of the Academy of Sciences of Russia". Our main product is the digital video surveillance system "Guard".The main Guard&＃39;s distinguishing feature is a presence of the dedicated real time operating system providing high reliability during its work and saving consumption of computer resources. Guard doesn&＃39;t make such high requirements as Windows- or Linux-based security systems; as a result, Guard allows to obtain most possible performance, minimal response time and a long time lasting stable operation without reboots, that permits to use our system in "black box" mode of operation at remote plants. Wide scalability of our system sets use range from moderate stores, offices, cottages and apartments (2-4 cameras configuration) to industrial plants, where a lot of cameras required. Uninterruptable, stable running permits Guard to be used at most important entities.