Прибор для измерения сопротивления аккумуляторов YR1035+ за 3375р

написал вчера в техподдержку компании YAOREA, сегодня пришел ответ следующего содержания:
«Question: May I ask why the calibration and recovery calibration options in the menu are not available and what is the impact?
Answer: Calibration and recovery calibration is the factory mode, which requires professional equipment and instruments to operate according to the correct calibration method. In order to avoid user misoperation, it is not open to the public. Does not affect the use.

This is the latest version.
839518446@qq.com „

то есть, как я понял, 7 и 8 пункты меняю заблокированы изготовителем, чтобы пользователь туда не лазил, это последняя ревизия прибора.

In this new version of the YR 1035+ device it is not possible to calibrate the wires. there is no Zeror inscription on the Hold button.
In store have drawn a device with a combined Hold/Zeror button, but i arrived a device with only a Hold button.
Also in the settings menu, item 7 (calibration) and item 8 (factory reset) are locked.
I wrote yesterday to the technical support of YAOREA, today I received a response with the following content:
“Question: May I ask why the calibration and recovery calibration options in the menu are not available and what is the impact?
Answer: Calibration and recovery calibration is the factory mode, which requires professional equipment and instruments to operate according to the correct calibration method. In order to avoid user misoperation, it is not open to the public. Does not affect the use.
This is the latest version.»
The new revision of the device has functional differences that are more limited than the old one. Be attentive when buying.