Feature: 1. Wide Application: This air quality detector can help detect gas and air pollution in homes, kitchens, bedrooms, offices, schools, cars, hotels, travel, camping, parties and other places. 2. Energy Saving: This air quality detector can automatically turn off the screen when no one is using it to reduce energy consumption. 3. Automatic Brightness Adjustment: This air quality detector can automatically adjust the screen display brightness according to the surrounding brightness so that the screen is visible without blinding. 4. Smart Air Semiconductor Sensor: This air quality detector uses a smart air semiconductor sensor to detect the temperature and humidity values of the air. Compared with ordinary sensors, it is more sensitive, accurate and stable. 5. Air Particle Detection: This air quality detector uses both a self developed NDIR sensor and a laser particle sensor to more accurately detect airborne particles to determine air quality. Specification: Item Type: Air Quality Detector Material: ABS Battery: Lithium Battery 3.7V 2000mAh ( With Built In Battery ) Basic Parameters: CO2: 400~6000PPM TVOC: 0~2.0mg/m³ HCHO: 0~0.6mg/m³. Package List: 1 x Air Quality Detector1 x USB Cable1 x Manual