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George_BG Turn it off firstly. Then press the on button for 5 seconds. CAL will appear on the screen. Then press on button shortly to increase calibration in 1 mm steps. When satisfied, press on button for 2 seconds and then press off button. Meter is calibrated.

2021-05-11 04:48:03 Hasznos (2)
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jimmytsapy calibration unfunctional, stupid instructions

2021-05-03 06:48:39 Hasznos (0)
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