Microwave measuring instrument is a portable instrument used to measure the energy leaked from various microwave equipment in space. The digital display of measured values is intuitive and clear. It has the advantages of power-on self-test, automatic zero adjustment, free setting of alarm parameter values by users, automatic overrun sound and light alarm, etc. It can be used in the fields of medical and health care, labor protection and environmental testing, and is also widely used. Digital display of measured value, LED digital display, high-precision analog-to-digital conversion chip. The core of the instrument adopts the microcomputer main control chip, which has the function of power-on self-test and automatic zero adjustment.