Hello, thank you for your suggestion, on the basis of which the supplier contacted us and would like to respond below.
"Hello, we are very sorry to hear about your experience. Please contact us at
[email protected] and send us the repair sheets from previous repairs + a description of the problems with the other instrument. We will be happy to deal with your case individually. Regards Team Sencor"
Please do not hesitate to contact us in case of need. Thank you and have a nice day, Ondřej - Alza expert