The PMS100 particle matter sensor (MTI.AQMS.ZG.PMS100) is a digital universal particle concentration sensor based on the principle of laser scattering. It can continuously collect and calculate the number of suspended particles of different particle sizes in the air per unit volume, that is, the particle concentration distribution, and then convert it into mass concentration, and calculate it as Universal digital interface form output. The fuselage has a beautiful appearance and is made of aluminum alloy. The surface is sprayed with a white reflective layer, which can reflect most of the sunlight and keep the internal temperature of the fuselage in a good working environment. It is also designed with a breathing light, which can be used to adjust the color of the light. Directly observe whether the current concentration of particulate matter exceeds the standard; continuous operation is stable, compact and lightweight, ultra-low noise, energysaving and environmentally friendly, and can be widely used in meteorology, space research and other fields.