2.8 Inch LCD Screen Ozone Detector Ozone Concentration Multipurpose Detectors

Features:
2.8 inch LCD color liquid crystal display, 320 * 240 pixels.
User adjustable alarm threshold for Ozone(O3) to alert user of elevated levels.
Test variables: PM2.5/1.0/10, Ozone (O3), TVOC, temperature, humidity.
Large 1200mAh capacity lithium battery, 5V Micro USB charging and low battery warning, intelligent monitor, AQI index and 4 interfaces switching.
On-board fan to draw in ambient air for more accurate real-time results.
It is small in size and easy to carry, and it can be carried anywhere.