• Ambient climate measurement with history function
• Analysis of past temperature and humidity measurement values directly on site
• Histogram shows measurement values of last 90 days
• All important values at a glance
• Large, easily legible display

The temperature and humidity measuring instrument testo 623 shows current and past temperature and humidity values as well as date and time, simultaneously in a large, clear display. This way, you have all important values constantly in view. The displayed curve analysis offers optimum evaluation of the measurement results of the past 90 days. The testo 623 is thus ideal for fast on-site checks of ambient conditions without complicated analysis on a PC. Thanks to the long-term stable sensor, the measuring instrument provides reliable and correct measurement results even after years. The hanging and standing bracket allows flexible positioning of the instrument on a table or wall.