Temtop P600 (upgraded version of P200) Air Quality Monitor, Portable Laser PM2.5 PM10 Particle Detector, Professional Air Quality Monitor Meter Accurate Testing

Very easy to use and position. Clear readouts. Essential piece of kit for monitoring home air quality

Excellent prompt service

Very good - but not great!

Really well made and feels sturdy, however, you need patience to take a reading, as it can take over 30 seconds to settle to a true number. I would happily accept a less precise reading (currently 0.1um) to obtain it quicker!