It has high strength and good hand feel. Features: - Laser sensor for PM2.5 to detect dust Smog. AQI for Integrated air quality index.Support time and date, self-calibration function. Air purification control Product Specifications: - Product Name: Handheld Multi-Function Air quality Monitor - Measure: PM1.0/PM2.5/PM10/TVOC/O3/Temperature/Humidity/AQI - PM2.5/PM1. /PM10 technology: Laser Scattering - O3 technology: Electrochemical sensor - Size: 1558735MM - TVOC technology: Semiconductor sensor - Processor: For ARM, High-speed complex calculations - Detection range: PM2.5 (0-999ug/M³); O3 (0.000-5.000ppm); TVOC (0.001-9.999Mg/M³) - Power supply: Rechargeable Li-battery 1200mah - Color: white - Material: ABS - Display: TFT LCD screen display - 320240 pixels - It can be used in office, indoor and fitment pollution detection - 24 hours real time monitoring Ozone (O3) Parameters: - Detect gas: Ozone(O3) - Detection range: 0.0005.000ppm -Detection principle: Electrochemistry - Response time: Diffusion 15S - Duplicate value: ±2 % - Resolution: 0.001ppm - Insulation resistance: 20M - Alarm function: Sound (A brief beep) - Alarm action value: 0.1/0.3/0.6ppm (alarm on/off switchable) Package Included: - 1 x Set of Air Quality Analyzer. Usually it cost about 35USD-50USD. If you receive defective item, please kindly notify us within 14 days. The item "Ozone Detector 0-5PPM PM2.5/1.0/10 Temperature Humidity TVOC Air Quality Monitor" is in sale since Saturday, February 27, 2021. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Test Meters & Detectors\Other Test Meters & Detectors". The seller is "cybereveryday" and is located in Shenzhen. This item can be shipped worldwide.