1. High-Quality Air Quality Detection: The Air Quality Detector uses electrochemical detection module, ensuring stable performance and strong anti-interference capabilities. This Professional PM2.5 PM10 Particle Counter is designed for long-lasting use with low power consumption. 2. Vivid TFT Color Screen: Equipped with a 2.8-inch TFT color display, the Formaldehyde Temperature Humidity Tester allows you to view at a glance, making it easy to monitor air quality in real-time. 3. Compact and Portable Design: The CO2 Detector is small and , making it easy to carry around. Its attractive appearance and color scheme a stylish addition to any home or office. 4. Versatile Application: Ideal for both professional and household use, this air quality detector provides comprehensive monitoring, helping you maintain a healthy environment by keeping track of various air quality indicators. Semiconductor sensor + infrared dust sensor, TFT screen supports animation logo customization, time It is completed by the crystal oscillator. If the battery is not removed, the time is set and there is no need to reset it (such as shutting down the machine). The parameter is displayed in green, and it change color to remind you if it exceeds the warning value. Parameters: Built-in lithium battery: 1200mAh Rated voltage: 3.7V Charging time: 2-3 hours Usable time: 240-360 minutes 12 in 1 detection functions: 1, time, 2, , 3, CO2, 4, CO, 5, formaldehyde, 6, TVOC, 7, PM2.5, 8, PM10 , 9, temperature, 10, humidity, 11, curve function, 12, formaldehyde comparison function. Colour:black Material:plastic The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 x 12 in 1 Air Quality Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.