Questions about Hama Ews-800

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I don't know. I've asked myself the same question!

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May be possible.

Hello Minuschi, The base station automatically stores the maximum and minimum values of the temperature and humidity in the outdoor and indoor areas. - Press the MIN/MAX button (30) repeatedly to switch between the display of the current temperature and humidity, lowest temperature and humidity (2) and the display of the current temperature and humidity (3). and humidity, lowest temperature and humidity (2: MIN) and highest temperature and humidity (2: MAX). humidity (2: MAX). - While the maximum values (2: MAX) are displayed, press the + key (31) repeatedly to display the following values with the date (21) and time (24) of their recording: - Maximum room humidity (14) - Maximum room temperature (12) - Maximum outdoor humidity (20) - Maximum outdoor temperature (18) - Maximum absolute/ relative air pressure (5) Use the same procedure to display the minimum values (2: MIN). While the individual maximum and minimum values are displayed, keep the SET key (28) pressed for approx. 3 seconds to delete the respective values with the date (21) and time (24) of their recording. Greetings Andy from Hama follow us: http://www.instagram.com/hama_schweiz/ http://www.facebook.com/Hama.Technics.Schweiz

Unfortunately, I cannot give you a concrete answer. The only thing I would do: remove the batteries from both the base station and the sensor and put the devices back into operation exactly according to the operating instructions. If this still does not help, I could not rule out a defect. Good luck and best regards W. Klemenz