Description: Are you worried about the formaldehyde of your newly decorated home? Do you know the bad air condition in your car that will cause big harm to you health? Do you want a air quality detector meter that can help you analyze the air around your little baby? Our new arrived formaldehyde detector will help you about this. Good product at competitive price! For the health of all you families, don't miss it!Features: The air quality tester is adopted quality ABS plastic for shell material, good touch feeling, non-toxic, eco-friendly and durable to use. The meter can analyze air quality and detect HCHO, TVOC, PM2.5. Big electronic screen, clear display, convenient for your reading. Strong anti-interference, detect more accurately. With calibration function, calibrate the meter under better quality air condition, such as balcony or outdoor bush. With usual calibration, the formaldehyde detector will work more accurately. The formaldehyde detector meter is suitable for new furniture & decoration, living room, for the new car etc. Specifications: Condition: 100% Brand New Main Material: ABS Plastic Product: Multifunction Air Detector Detecting Item: HCHO, TVOC, PM2.5 HCHO Detecting Range: 0-1.999mg/m3 TVOC Detecting Range: 0-9.999mg/m3 PM2.5 Detecting Range: 0-999g/m3 Continuous Working Time: 60min Power: 3pcs AA Batteries (Not Included) Use Condition: Atmospheric Pressure: 86Kpa~106Kpa Relative Humidity: 20~85% Working Temperature: -10~45 Storage Temperature: -20~50 Color: as picture Size: Approx. 15.5 x 7cm / 6.1 x 2.8inch Thickness: Approx. 4cm / 1.6inch Package Weight: 289g How to use? 1. Turn on power switch, the detecting tester begins to warm-up, the LED screen will display count-down. 2. Calibration: After count-down ended, take the detecting meter outdoor, makes the detecting meter touch the clean natural air for 8 minutes, and then press the button 3 seconds to calibrate the zero. After calibration, the detector is ready for use. 3. Start to detect: Take it indoors and wait for 5 minutes or longer to read the result, then change to the next place. Please keep door and window closed when testing air quality. Package Included: 1 x Multifunction Air Detector (Not included Batteries)