Features: This portable 6 in 1 detector accurately measures oxygen, CO2, temperature, humidity, altitudes, and atmospheric pressure, offering comprehensive air quality monitoring for reliabled environmental safety assessments. Featuring a lightweight plastic design, precise sensors for real time data, digital display, it ensures easy portability and accurate readings in diverse conditions. Ideal for professional like environmental engineers, safety managers, outdoor enthusiasts, and everyday users in labs, factories, or homes who need dependable air quality insights. Perfect for scenarios such as construction sites, industrial plant, outdoor adventures, and emergencies responses where immediate environmental awareness is essential for safety. Built with plastic casing to resist impacts and harsh environments, this user friendly device delivers quick measurements for informed decision making. Specifications: Component: plastic Measurement accuracy: 1PPM Power supply: 5V/2A Measuring ranging: 0-500ppm Size:Approx.50x50x25mm/1.97x1.97x0.98inch Package Includes: 1pcs Carbon Monoxide Detector 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 color. Thanks for your understandings.