TESTO 810 Mode D'emploi page 21

Tips and assistance
Questions and answers
Question
Hi or Lo
If we could not answer your question, please contact your dealer
or Testo Customer Service. For contact data, see back of this
document or web page www.testo.com/service-contact
4.2843
Possible causes/solutions
· Readings outside the measuring range (too high, too
low): Keep to the permitted measuring range.
· Residual capacity <10 min: Change batteries.
www.calcert.com
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Tips and assistance 21
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