Features 1、Advanced Sensing Technology: This 3 in 1 CO detector features electrochemical sensors for real time monitoring of CO levels, temperature, and humidity, ensuring accurate and quick responses. 2、Portable and Convenient: Designed for on the way safety, this compact CO detector includes a lanyard for easy carry, a built in 1000mAh battery, and a Type C charging cable for portability. 3、Long Lasting Battery Life: With a screen off mode lasting up to 40 hours, this detector guarantees continuous safety monitoring while enjoying outdoor adventures or hosting gatherings. 4、Versatile Application: This portable CO detector is an essential tool for homeowners, drivers, campers, and enthusiasts, suitable for activities like hiking, barbecuing, and home safety in various environments. 5、Comprehensive Safety Tool: Suitable for diverse settings including living rooms with fireplaces, kitchens, bedrooms, garages, and hotels, this detector ensures peace of mind wherever you are. Specification Item Type: CO Detector Material: ABS Power Supply: 1 built in lithium ion battery 1000mAh Charging Voltage: DC 5V CO Measurement Range: 0-999 ppm (+/-5 ppm) Temperature Measurement Range: -10℃ - 50℃/14℉-122℉ (+/-5%) Air Humidity Measurement Range: 0-95% RH (+/-5%) Sensor Type: Electrochemical Sensor Sensor Preheating Time: 35 seconds Data Refreshing Rate: 2 seconds Package List 1 x Detector 1 x Charging Cable 2 x User Manuals