Features Portable Design For Easy Use: This handheld air quality detector features a large screen for clear readings and multiple alarm modes, making it perfect for any environment High Accuracy Measurements: Equipped with a sensitive semiconductor sensor, this handheld air quality meter delivers precise results for total volatile organic compounds and HCHO detection Versatile Applications: Ideal for various settings, this handheld air quality tester effectively assesses air quality, helping you maintain a healthy environment at home or work Rapid Sampling Rate: With a quick 1-second sampling rate, this handheld air quality monitor ensures you receive timely updates on air pollutants for informed decisions Rechargeable Convenience: Powered by a built-in 3.7V 400mAh lithium battery, this portable TVOC detector can be easily charged anytime, anywhere with the included cable Features: 1、PORTABLE DESIGN: Handheld air quality detector upgraded with a large screen display for clear and visible readings, multiple alarm modes to meet different usage needs, and accurate detection 2、ACCURACY AND : Handheld air quality meter equipped with a high accuracy gas sensitive semiconductor sensor, ensuring accurate measurement results; Come with a rechargeable lithium battery for longer battery life 3、WIDE APPLICATION: Handheld air quality tester is suitable for detecting HCHO, total volatile organic compounds, and assing air quality in various environments 4、FAST SAMPLING RATE: The air quality monitor has a sampling rate of 1 second, ensuring quick and efficient detection of air pollutants for you 5、CONVENIENT POWER SUPPLY: Handheld air quality monitor is powered by a built in 3.7V 400mAh lithium battery, with the option to charge anytime, anywhere using the included charging cable Specification: Item Type: Handheld Air Quality Detector Material: ABS Sampling Rate: 1 Second Power Supply: Built in 3.7V lithium battery 400mAh Package List: 1 x Air Quality Tester 1 x User Manual 1 x USB Cable Package List 1 x Air Quality Tester 1 x User Manual 1 x USB Cable