1、Compact Portability: Designed for convenience, this compact air quality detector is easy to carry, making it suitable for monitoring air quality wherever you are, indoors or outdoors. 2、Vibrant LCD Display: The large, colorful LCD screen allows for easy identification and reading of air quality metrics, ensuring you can quickly assess the environment at a glance. 3、Comprehensive Monitoring: Check multiple pollutants including HCHO, TVOC, PM2.5, and PM10 with this versatile detector, providing a thorough assessment of the air quality in your surroundings. 4、Versatile Use: This air quality tester is suitable for bedrooms, cars, and camping sites. Defend your family's health by ensuring clean air in every enclosed space. 5、Advanced Semiconductor Sensors: Equipped with intelligent semiconductor sensors, our four in one air quality detector delivers enhanced sensitivity, accuracy, and stability compared to ordinary sensors for dependable readings. Item Type: Air Quality Detector Material: ABS Technology: Nature Air Flowing Display: LCD Color Screen Digital Display Error Fluctuation: 3% to 30% Charging Voltage: 5V Preheating Time: 120s (Only for HCHO and TVOC Sensor) Power Supply: 1 Lithium ion Battery 1200mAh (Built in) Charging Time: 4 hours Standby Time: 240 to 360 minutes Measurement Types: HCHO TVOC PM2.5 PM10 1 x Air Quality Detector 1 x Charger 1 x Storage Bag 1 x User Manual