Description: Portable: Carbon Monoxide Monitor has a compact body design, Type C interface, simple and stylish appearance, and a combination of beauty and technology, making it easy for you to carry it with you.High Accuracy: CO Monitor has a built in high performance electrochemical carbon monoxide detection chip to ensure more accurate instrument detection. Higher sensitivity and faster computing speed. 3D porous air duct design improves the air flow rate.Intelligent Detection: CO Monitor can achieve 0 second real time detection and intelligent alarm. Green indicates a safe state, with no alarm sound; yellow indicates a circular beeping alarm, once every 3 minutes. The data refreshed in 2 seconds.Clear Display: CO Gas Monitor has an 1.9 inch screen display, which makes reading clear at a glance, more intuitive, and more convenient. Resolution 240x280.Multifunctional: CO Monitor can not only monitor carbon monoxide concentration, but also detect indoor air temperature and humidity. Widely used in indoor and outdoor places. Specification: Material: PPDetection Range: 0-1000PPMWarm Up Time: 35sWorking Temperature: -20-60Working Humidity: 0-95%RHData Refresh Time: 2sBattery Powered: Powered by 3.7V Built In Lithium Battery 700mAhCharging for 1 Hour, It Can Be Used for 13 Hours in on Screen Mode and 30 hHours in off Screen Mode. Size Chart: 85mmx51mmx17mm/3.35inchx2.01inchx0.67inch Package Includes: 1 CO Monitor 1 Manual Note: Please allow slightly errors due to manual measurement and different monitors.