Issue 2/ 2011 of TD Installations presents the possibilities for automatic control of building HVAC systems, as well as some special features of design and construction of hotel’s electrical installation. The theme in the rubric of light is focused on the use of LEDs in exterior lighting systems. For specific design and installation of various scale systems for fire alarm and fire fighting you can read in the first article of "Security" section. The second one is focused on IP cameras and standardization of products for network video surveillance, in accordance with the standard ONVIF. The section on HVAC equipment includes themes as "Circulation pumps for heating installations" and "Energy efficient HVAC systems. The article "Energy Monitoring Systems for buildings” is examining the different types of systems and their contribution in achieving the optimum energy consumption in buildings.