High precision and high resolution; Automatic backlight, buzzer alarm function; Automatic shutdown function: The automatic shutdown time can be set, and the automatic shutdown can achieve a point saving effect when there is no operation for a long time. Minimum force value shielding function: the data within the set minimum range can be shielded; Setting function of gravity acceleration----User can input at your option the accurate value of gravity acceleration at the using place so as to make the testing and unit conversion be more accurate.