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Taking into account that the age of structures is closely connected to their energy consumption, the monitoring of structures is a crucial task for engineers. This article deals with application of Arduino based low-cost sensors for environmental monitoring ofbuildings. To do so, open source platform Arduino as well as four environmental sensors, DHT22, have been used for measuring variation of temperature and humidity. In order to check accuracy of the utilized data acquisition system, statistical approach was used to check the repeatability and discrepancy of the recorded data. Statistical calculations indicate that the sensor is more accurate in terms of measuring temperature rather than humidity one since discrepancy of the temperature parameter is less than the humidity one. Toe maximum range of standard deviation derived for temperature and humidity parameters are less than 0.13 and 1.33 respectively., Toe authors are indebted to the Spanish Ministry of Economy and Competitiveness for the funding provided through the research projects BIA2013-47290-R, BIA2017-86811-C2-1-R, and BIA2017-86811-C2-2-R founded with FEDER funds It is also to be noted that funding for this research has been provided to Mr. BEHNAM MOBARAKI by the Spanish Ministry of Economy and Competitiveness through its program for his Ph.D. It is also to be noted that part of this work was done through grant number 2018-COB-9092 from Universidad de Castilla La Mancha (UCLM).