Features: Keep your family safe with this 4 in 1 Carbon Dioxide detector. It accurately measures CO2 levels, temperature, and humidity, providing a comprehensive understanding of indoor air quality. This portable CO2 meter features a user friendly LCD display for easy reading and operate. Suitable for various indoor environments, this CO2 detector is perfect for those concerned about the safety of their loved one. From homes to workplaces, this CO2 detector ensures a secure environment by monitoring combustion devices like gas heaters and fireplaces. Investing in the well being of your family with this CO2 detector. It adheres to strict safety standards, guaranteeing accuracy and effectiveness. Specifications: Material: ABS Battery: 2500mAh(Include) Measuring: 400PPM-5000PPM Using Time: 240-360 minutes Size: About. 117x73x60mm/4.61x2.87x2.36in Package Size: About. 145x100x75mm/5.71x3.94x2.95in Package Includes: 1x CO2 Tester note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.