Some time ago I looked at an air quality monitor but this was not cased and I wondered if it was actually worth the bother. This PM2.5 unit on the other hand is ready to go and lovely. Complete with internal battery and microUSB charging lead, the unit arrived with the battery dead so I put it on charge for half an hour before turning it on to take photos. It clearly needs a lot more charging, as later in the day the badly-formed message “Please charge the voltag” popped up on the display.
At the time I wrote this, the lighting in my office wasn’t ideal so please take my word that the quality is excellent, colours are vivid and the overall display is crystal clear. That bright red light at the top is only active when the unit is on charge.
As well as the now usual temperature and humidity, the unit offers an at-a-glance summary of air quality and individual readings (O3 – Ozone, tVOC, PM1.0, PM2.5, PM10) and battery state – as well as accurate time and date.
The unit has a built-in (extremely quiet) fan and a handy stand at the back.
Temperature can be shown in C or F as required, there’s a theme setting (pink, blue, yellow, red, purple, black), language setting, brightness (sadly using only one “S”) control and the option to turn an alarm buzzer on and off. Display is 320x240px resolution.
The user-adjustable alarm can detect and warn of elevated O3 levels. ll levels where we are located are on the good side. If I worked in an office or the shop floor I think I’d be wanting one of these around me more or less permanently:-)