Particle Mass Concentration Detector with Formaldehyde CO2/PM2.5/PM10 TVOC Temperature/Humidity C-BITE They measure 13in x 14

They measure 13in x 14

must be used on a table with umbrella hole when used with propane hose

adding further confidence to your purchase

anti-freezing

Particle Mass Concentration Detector with Formaldehyde CO2/PM2.5/PM10 TVOC Temperature/Humidity C-BITE They measure 13in x 14The Sper 900033 Particle Mass Concentration Detector is an advanced, desk or table top device that accurately monitors formaldehyde (H2CO) and other important air quality levels in a closed environment. The large, colorful LCD display indicates multiple indoor air quality parameters with a thoughtfully designed, graphical user interface. The entire display functions as a six color warning system, where colors correspond to actual realtime pollutions