Handheld/PM monitor. Model: Y-09. Manufacturing in mumbai, manufacturing in india. PM Meter.Particulate matter Monitor. PM10, PM2.5, PM1.0 Monitor Handheld/Portable PM Monitor is used to monitor the suspended particulate concentration in the air. It adopts optical scattering technique. This type of product has many advantages, such as fast detection speed, high accuracy, light and small, easy operation, measuring and displaying of 3 channels at the same time. It adopts the method of automatic measurement, improving the work efficiency effectively. Features: Selectable Sample time. •Data Storage directly on to monitor base •Audible alarm functionality •Long life lithium battery technology •Connect direct to PC via USB •Direct Onsite Printing Optical Scattering Technology for PM10, PM2.5, PM1.0