1.Operate the unit only as described in this manual.

2.Do not drop the unit. Protect it from shocks and vibration.

3.Do not store or use the unit in locations where the unit may be subject to

3.1 splashes of water or high levels of dust.

3.2 air with high salt or sculpture content, or other gases or chemicals.

3.3 high temperature or humidity (above 50℃，90%RH) or direct

sunlight.

4.Remove the battery if the unit is not to be used for an extended period, to prevent possible damage due to battery fluid leaks.

5.Do not disassemble the unit or attempt internal alterations.

6.Have the unit and the accelerometer checked and serviced about once every 12 months.(Sensitivity calibration can be performed at the factory for a fee.)

7.Do not tap the display with a pen or the like, to prevent malfunction.

8.In case of malfunction, do not attempt any repairs .Note the condition of the unit clearly and contact the supplier.

9.In the process of measurement, caution tape don't contact with mechanical operation

10.Dispose of the battery in accordance with local laws and regulations .