Features: The Carbon Monoxide Temperature Humidity Detectors ensures indoor safety by accurately detecting carbon monoxide, temperature, and humidity. User friendly display for easy reading of information. Suitable for various user concerned about indoor environment quality. The builtin 800mAh battery can be fully charging within 1hour and this CO detectors in standbys. Keep working continuously for 13hours. Depending on the CO concentration, the device displays a coloured alarm on the screen and give sound alarm. This device make the CO concentration visible and easy to understand. Specifications: Material:ABS Applicable temperature: -10-50 Carbon monoxide measurement ranges: 0-1000PPM Carbon monoxide measurement accuracy: 10PPM Temperature measurement ranges: -10-50 Temperature measurement accuracy: 1 Humidity measurement range: 0-99RH Humidity measurement accuracy: 5RH Battery:800mAh Charging:Type C Color:Black,White Size:Approx.35mm/1.37''x16mm/0.63''x105mm/4.13'' Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color. Package includes: 1x CO Detectors 1x User Manual 1x Charging Cable