The measurements of air temperature in the environmental studies are usually a standard action, but often pose a lot of problems. The main trouble all field measurements is the problem of power supply. The paper presents an alternative to expensive and subsidiary equipment in the form of iButton®Dallas. The preliminary tests have shown their very high sensitivity, accuracy and reliability. The sensors have been used in several field studies, from the vertical point system, trough the distribution of microtherm conditions within 10 hectares, to the topoclimatic analysis an area of about 50 km2. Energy autonomous sensor allowed full use of the advantage of another that was small in size and place them with no problem at selected points. The measurements were obtained by a number of important information about the distribution of temperature, which in standard conditions of observation would be impossible to do so iButton®Dallas sensors are therefore a good alternative for all kinds of environmental observations, aimed at verification of thermal condition of the atmosphere and other backgrounds, for example soil or water.
Key words: iButton sensor, air temperature, environmental studies