New houses that have just been renovated, furniture just bought, and new car purchased will contain formaldehyde, which can cause illne. With this formaldehyde detector, you can monitor air quality at any time. Features: Phone APP Monitor: Support Android- & iOS Phone System, View data remotely Temperature difference compensation calibration technology, judge the ambient temperature data, automatic calibration test results. You can measure CO2 levels, care about your family's health. Locate the source of the contamination and test it more accurately. It can be connected to mobile power to check the sealing space. Long-term record, tracking formaldehyde /TVOC concentration trend. Can be connected to power bank ,more reliable for confined space detection Find the source of pollution It can be used in greenhouse plantation, farm indoor air detection, household air detection and so on. Specifications: Power supply: USB 5V Connection mode: Bluetooth4.0 TVOC detection range: temperature 5-35C, 0~9.999mg/m3 Detection range of HCOC: Temperature 5-35C, 0~9.999mg/m3 CO2 detection range: temperature 5-35C, 400-2000ppm Temperature detection range: -10~50C Item size: 75 * 75 * 50mm / 3.0 * 3.0 * 2.0in Item weight: 74g / 2.6ounce Package size: 116 * 95 * 56mm / 4.6 * 3.7 * 2.2in Package weight: 110g / 3.9ounce Packing List: 1 * Air Quality Tester