ED99 Hand Held Multi-function Air Quality Tester

Recent research by Professor Stephen Heppell and others shows that poor air quality in classrooms particularly high CO2 concentrations affects learning abilities 

The ED99 is a hand held portable air quality tester that simultaneously monitors, displays and gives audible alarm for 5 air quality criteria : the concentration of CO2, Total volatile Organic Compounds (TVOC),  Formaldehyde (HCHO), Temperature, and Humidity in the environment. 3 Imojis also indicate the air quality levels as Excellent, Good and Polution

Used inside or outside buildings to measure the toxicity of air particularly in confined spaces such as classrooms, meeting rooms, dwellings  and vehicles.

The meter has an inbuilt Lithium battery and a USB charger so can be used as a portable device or remain plugged in all day to continuosly monition changing conditions or build up of CO2 etc if windows left closed all day

• Switchable between Centigrade and Fahrenheit with audible alarm setting on/off switch.
• Built-in 1800mAh capacity lithium battery, with USB charging cable.
• runtime 24 hours,
• charging time 6 hours
• Battery warning flashes to notify when recharging needed
• Includes USB Charger so can run continuosly without draining battery