Four optional speeds: Select the speed according to the axis type to make the measurement more accurate, Type 1: 2%~40%; Type 2: 2%~50%; Type 3: 2%~60%; Type 4: 2%~70%. Probe protective cover: Made of natural rubber, not easy to fall off, easy to use. High-sensitivity probe: Equipped with 2 high-precision 303 stainless steel probes, it can penetrate the test surface and present fast and precise characteristics. The hold button freezes the reading and retains the data. High-definition backlight display: Supports backlight display, it is easier to read the reading in the dark environment 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/soil, etc. It is an indispensable device that makes your work easier. Temperature compensation function: It has an automatic temperature compensation function, which can reduce the error caused by too high or