Features: 1. Digital Screen: The CO2 meter has a large digital screen, which can clearly display detection indicators of carbon dioxide, temperature, humidity 2. 1000mAh Large Capacity: CO2 moisture meter has a 1000mAh large capacity lithium ion battery, which is safe and durable 3. Intelligent Chip: Temperature detector has a highly sensitive intelligent chip, to ensure that the instrument detection more accurate 4. Scope of Application: CO2 meter is widely used indoors and outdoors, closet, kitchen, car, home, can effectively avoid gas poisoning 5. Small and Compact: The small and compact body does not take up too much use space, which is convenient for storage and use Specification: Item Type: CO2 Meter Material: ABS Product Sizes: Approx. 5.2 x 8.6 x 2cm / 2.0 x 3.4 x 0.8in Uses: Carbon Dioxide Detector Battery: Lithium Ion Battery 603040 1000mAh (shipped with built in battery) Detection Range: 400 to 5000 ppm (50 ppm) Input Voltage: DC5V 0.5A Operating Voltage: 3.7V Preheating Time: 35S Data Refreshing Frequency: 2S Working Humidity: 0 to 95%RH Operating Temperature: -10 to 50℃ Plug: USB Weight: Approx. 119g/4.2oz Package List: 1 x CO2 Meter 1 x USB Cable 1 x User Manual Features Large Digital Screen: Easily monitor carbon dioxide levels, temperature, and humidity with the CO2 meter's clear and easy-to-read digital screen. 1000mAh Battery Capacity: Enjoy long-lasting and reliable performance with the 1000mAh lithium-ion battery, ensuring continuous operation of the CO2 moisture meter. Highly Sensitive Intelligent Chip: The temperature detector Features an intelligent chip that enhances accuracy, providing precise and reliable readings. Versatile Application: Suitable for indoor and outdoor use, including closets, kitchens, cars, and homes, the CO2 meter effectively prevents gas poisoning. Compact and Convenient: With its small and compact design, the CO2 meter takes up minimal space, making it easy to store and use.