Features:  - Multi-functional design: air quality, formaldehyde, TVOC, PM2.5, PM10, time.  - Accurate detection: Quad-core processor with high precision and good stability.  - Large HD LCD screen: color partitioning for clear all information display.  - Acrylic mirror: dustproof and anti-fog.  - Simple shape design, small and lightweight.  - The tuyere is perceived in real time, mastering the direction of airflow with good contact response.    8 Major functions:  • Detection of formaldehyde.  • Detection of TVOC and benzene.  • Air quality rating.  • PM2.5 monitoring.  • PM10 monitoring.  • Intelligent alarm system.  • Air monitoring real-time recording.  • 24-hour air monitoring.    Specification:  Testing items: Formaldehyde, TVOC, PM2.5, PM10, Air quality;  Display mode: HD color LCD display;  Test principle: Electrochemical semiconductor + Laser sensing;  Input specification: 5V/1A;  Power supply: Polymer lithium battery;  Battery capacity: 2600mAh;  Alarm mode: Buzzer alarm;  Power connector: Micro USB connection charging;  Alarm valve: Adjustable;  Color: Black;  Dimension: 152×68×42mm (6×2.7×1.7');    Package included:  1 x PM2.5 Detector