The main activity of Protronix company is development and production of industrial electronics including customer-tailored development and production of industrial electronics. The main activity of Protronix company is development and production of industrial electronics including customer-tailored development and production of industrial electronics. We are focused on application of single-chip microcontrollers, especially in the area of monitoring and regulating technology. We develop both hardware and software for particular equipment. Furthermore we produce internal air quality sensors, carbon dioxide sensors, relative humidity sensors, carbon dioxide data-loggers, ammonia data-loggers, control electronics for HVAC units, temperature controllers, sauna temperature controllers, solar heating controllers etc. We can offer not only development of control electronics, but also customised production of electronics (from single pieces to medium scale production).