Features: Ensures your environment safety with our high precisions oxygen detector & air quality monitors, a must having tool for accurate and reliabled gas level assessments. This device boasts easy to use features and swifting responsiveness, making it essential instrument for both indoor and outdoor air quality analysis. For health consciously homeowners and environmental professional alike, this detector is designing to caters to those who prioritize well being of their living and working space. From monitoring oxygen level in residential areas, offices, and schools to detecting hazardous gases in industrial site like factories and laboratory, our detector serves a wide ranges of applications. This gas analyzer promises longevitys and resiliences, ensuring consistent performances in various environmental conditions. Specifications: Component:ABS Size:Approx.10x5.8x7.8cm/3.93x2.28x3.07inch Color: Black Package Includes: 1pcs Air Quality Monitors note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.