The air quality detector can detect ambient PM2.5 , HCHO, TVOC, temperature and humidity through a dedicated sensor module, and has a big LCD display screen to display data. In addition, according to the quality of the test object, there is a corresponding grade indication. When HCHO exceeds the standard seriously, there will be a buzzer indication. Really a good helper for family living environment detection. Features: Multifunctional Air Quality Detector: it can test the PM2.5, HCHO/TVOC, temperature and humidity, real-time all-round detection, detect the air quality anytime and anywhere. Mie Scattering Acceleration Measurement: sensitive detection of PM2.5 pollution index, more accurate detection of small particles. Temperature and Humidity Compensation Calibration: through the principle of semiconductor humidity sensor and thermal sensor, the temperature and humidity change can be accurately measured to ensure more accurate formaldehyde detection results. Independent Sensor, AI Intelligent Computing: semiconductor gas sensor, TVOC detection module, real-time display of formaldehyde concentration per cubic meter, TVOC content, etc. The Intelligent Calibration and Detection of SEN+ Algorithm are Accurate: the high-performance chip algorithm has anti-interference, high sensitivity, fast operation speed, and more accurate and stable data. Convective Air Holes and Bracket Design: 3D convection hole design, close to the sensor, real-time air circulation convection for more accurate detection. Dual Thousand Digit Display: large LCD digital display, all data are clear to read at a glance. Built-in Large Capacity Lithium Battery: it is powered by 1400mAh lithium battery, which can be charged by charger, computer, etc., the power supply function is flexible. Simple Design: small and portable, one-key detection, easy to operate, suitable for home, hotel, rental, office, outdoor, indoor, etc. Specifications: Material: ABS PM2.5/10/1.0 Detection Module: Mie scattering principle PM2.5/10/1.0 Detection Range: 0-1000 (ug/m3) Formaldehyde, TVOC Detection Principle: Principle of semiconductor gas sensor Formaldehyde Concentration Range: 0-0.25 (mg/m3) TVOC Concentration Range: 0-1.285 Temperature Detection Range: -20~100 Temperature Detection Accuracy: 2 Humidity Detection Range: 10-100% Humidity Detection Accuracy: 5 Display Type:: VA LCD display Battery: 3.7V 1400mAh lithium battery Item Size: 150 * 64 * 24mm / 5.91 * 2.52 * 0.94in Package Weight: 190g / 6.70oz Package Size: 15.6 * 8.5 * 2.8cm / 6.15 * 3.35 * 1.10in Package List: 1 * Tester 1 * Charging Cable 1 * Manual (English)