Feature: 1. Accurate Readings: Air quality monitor uses a high quality semiconductor TVOC sensor to accurate and reliable results. The electrochemical detection module ensures that the air quality detector gives accurate readings every time. 2. High Performance: The carbon dioxide detector has a stable, performance with excellent immunity to interference and the ability to differentiate between different gases. The low power consumption and long service life of the unit an excellent investment. 3. Display: The gas detector features a , clear display to that the user can read the results comfortably and quickly. The device can display multiple data types simultaneously, making it easy to use. 4. Versatile: The portable air quality monitor is versatile and can detect a wide range of gases, including CO2, TVOC and HCHO. This feature makes the device useful in a of environments, including homes, offices and schools. 5. Easy to Use: The air quality monitor has a user-friendly interface that can be operated by anyone. The device has a simple operating mode and comes that guides the user on how to use it properly. Specification: : Paint & Decorating Gas Type: Multifunctional With LCD Screen Or Not: Yes Model Number: Air Quality Monitor Built-in lithium battery: 2000mAh Charging: about 3 hours Available time: 240-360 minutes Detection technology: semiconductor Working temperature: 0-50 Display mode: TFT full color screen Working voltage: 5V Sensor: Laser sensor Material: ABS colour: black Package Contents: 1 x Detector 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.