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: Designed with 2 high-precision 303 stainless steel probes, it can penetrate the test surface and has fast and accurate characteristics. The hold button freezes the reading and retains the data. High-definition backlit display: Supports backlit display, it is easier to read the measured value in the dark environment of 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 a must-have device to facilitate your work. Temperature compensation function: It has an automatic temperature compensation function, which can reduce the error caused by too high or too low