3-In-1 Digital Air Quality Detector Portable Formaldehyde Detector Aqi Hcho Tvoc Monitor Smart Calibration Accurate Gas Analyz

Specification: Size: approx. 140*40*36mm Measurement accuracy: 0.001 Flow range: 50-150m2 (L/min) Power supply: AAA battery(not include) HCHO range: 0.000~1.999 mg/m3 TVOC range: 0.000~9.999 mg/m3 AQI range: calass 1-6 Features: Buzzar alarm sound prompt. Low voltage alarm prompt. Good touch feeling, non-toxic, eco-friendly and durable to use. Strong anti-interference, detect more accurate. Big electronic screen, clear display, convenient for your reading. Simple and easy to operate. Convenient to carry. Durable in use. Suitable for new furniture & decoration, living room, for the new car etc. For AQI, HCHO, TVOC test. Package includes: 1 * Air Quality Detector 1 * Charging Cable Details pictures: