Feature: Electro-chemical Sensor TechnologyUpgraded indoor air quality monitor built in DART electrochemical sensors that can accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC). Those readings involve detection of toluene, harmful chemical substances and pollutants in the air such as carbon dioxide, carbon monoxide,smoke,fog,dust,ink and others. MaterialMade of ABS material, good feeling, non-toxic, eco-friendly and durable to use. Package Included: 1*Air quality tester, 1*USB cable, 1*User manual. LCD Color Screen Digital DisplayWith LCD Color Screen Digital Display; it can mean value for each gas because long-term monitoring, the real-time data exist instability, accurate and clear. 1000mAh Rechargeable BatteryBuilt-in 1000 mAn rechargeable battery and with USB cable, the standby time can last for 6-8 hours after full charging while others can only use 3-6 hours after full charging. Portable and FoldableMini-compact and easy to carry; Foldable support in kitchen, bedroom, office, school, car, hotel, travel, camping, party, etc. Easy to OperateThis is easy to operate , easy to read numbers and support of an alarm sound will let you know if your air is unsafe and you need to take some actions. At the same time, you can set a standard value of formaldehyde. If the density is higher than standard value, the device will alarm. Multi-functional Air Quality DetectorIt's necessary to know the air quality of the place where you live. Upgraded indoor air quality monitor built in DART electrochemical sensors that can accurate detect air of Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC). Those readings involve detection of toluene, harmful chemical substances and pollutants in the air such as carbon dioxide, carbon monoxide,smoke,fog,dust,ink and others.. Wide ApplicationIt can be used for family,offices, hotels, schools, factories, conference rooms, laboratory, airports, hospitals, restaurants, and many other public places,meeting your various needs.it is not only a accurate monitor for air quality, but also nice decoration in your car or house. Specification: Material: ABS Test Function: HC-HO/TV-OC/CO-2 Detection Technology: Air Natural Flow Detection Technology Display mode: LCD color screen digital display Error Floating: 3%-15% Working Voltage: 5V/ 1A Start-up preheating: 120 seconds (only: for-malde-hyde TV-OC CO-2 sensor) Power: 5W Charging time: about 4-6 hours Standby time: about 6-8 hours Detection range: TV-OC Test Range: 0.000~2.000mg/m³; (D9-B, D9-D, D9-H) HC-HO Test Range: 0.000~2.500 mg/m³; (D9-D, D9-H) CO-2 Test Range: 400~4000ppm (D9-H) Size:148x70x30mm/5.77x2.73x1.17in Color: Orange Package Included: 1x Air Quality Monitor 1x USB Cable 1x User Manual