Portable Ozone Analyzer multicolour 28 x 7 x 22.5cm

2.8" color liquid crystal display (LCD), 320 * 240 pixels.
User adjustable alarm threshold for O3 to alert user of elevated levels.
It can be used in office, indoor outdoor and detection of ozone residue after disinfection.
Large 2000mAh capacity lithium battery.
On-board fan to draw in ambient air for more accurate real-time results.