1、[Multi Function] Our air quality monitor can accurately measure 7 items of data, including O3 concentration, TVOC, pm1.0, pm2.5, pm10, temperature and humidity, allows you to fully know the air quality of environment. 2、[High Accuracy] Built in high precise sensor and high performance processor chip, the air quality detector provides more accurate information, also offers real time testing, shows data in the form of charts to make the changes clearer. 3、[Widely Applicable] The detector is light, and you can take it to any place, which is suitable for family use, such as kitchen, bedroom, living room and study, and offices, hotels, cars, tourism, camping and parties. 4、[Easy to Use] The air quality monitor has four function buttons, which is easy to operate. When the air condition is unfavorable to you, the meter will also provide color and sound alarm. 5、[Excellent Accessories] Equipped with 1200mAh large capacity lithium battery, this tester can be charged quickly in only 2 to 3 hours, and the standby time is up to 5 hours. Built in turbine makes the work stable and fast. Item Type: Ozone Detector Material: ABS Display Mode: 2.8 inch LCD display, 320 x 240 pixels Atmospheric Pressure: 86Kpa to 106Kpa PM Detection Method: Scattering O3 (Ozone) Ideal Range: ≤0.1ppm TVOC Ideal Range: ≤0.6mg/m³ (0.45ppm/m³) Ozone Alarm Threshold: It can be set to 0.1, 0.3 or 0.6ppm. If O3 exceeds the set value, the device will emit a short beep Sampling Time: 1.5 seconds Test Temperature: -10℃ to 50℃, 14℉ to 122℉ Relative Humidity: 20% to 85% Storage Temperature: -10℃ to +60℃, 14℉ to 140℉ TVOC Concentration Unit: mg/m³ O3 Concentration Unit: ppm Battery: 1 x 18650 1200mAh lithium battery (built in) Charging Interface: DC5V micro USB port 1 x Ozone Detector 1 x USB Cable 1 x User Manual