Catalog > Test and Measurement > Test and Measurement Instruments > Multimeters > Digital Multimeters Catalog > Test and Measurement > Test and Measurement Instruments > UNI-T Instruments Air Quality Meter Air Quality Meter UNI-T A25M AIR QUALITY METER PM2.5 (ug/m³) , AUTO PWR OFF , LOW BATT INDICATION , LCD BACKLIGHT , DISPLAY 35x35mm , 64x60x28mm , 85g Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Precise PM2.5 concentration based on pre-calibrated sensors Temperature measurement (°C/°F) Emoticon display LCD backlight and red backlight alarm Specifications M2.5 (ug/m³) : 0~100 : ±(10ug/m³+10dgts) 101~400 : ±(10%+30dgts) 401~500 : ±(10%+50dgts) Temperature (℃) 0~2mg/m³ : For reference only Temperature (℉) 0~2mg/m³ : For reference only Auto power off : Low Battery Indication : Yes Red backlight alarm : Yes LCD backlight : Yes Concentration emoticon : Yes Power : 520mAh rechargeable polymer battery Display : 35mm x 35mm Product color : White and grey Product net weight : 85g Product size : 64mm x 60mm x 28mm