Four speeds optional: select the speed according to the axis type to make the measurement more accurate, type 1: 2% to 40%; type 2: 2% to 50%; type 3: 2% to 60%; type 4: 2% ~ 70%. Probe protective cover: made of natural rubber, not easy to fall off, easy to use. High sensitivity probe: Designed with 2 high-precision 303 stainless steel probes, it can penetrate the test surface and has precise and precise characteristics. The hold button freezes playback and retains data. High-definition backlit display: Supports backlit display, it is easier to read the measured value in the dark environment of the day and night, and the work efficiency is higher. The tester is lightweight and easy to carry. Wide range of applications: can be used for building materials, wood, water stains on walls, capers/dirt, etc. It is an essential device to make your work easier. Temperature compensation function: It has an automatic temperature compensation function, which can reduce the error caused by too high or too high temperature. bass during measurement.