Carbon Monoxide Checker Portable Carbon Monoxide Checker for Camping Carbon Monoxide Type-c Rechargeable Alarm for Car Camping Winter Camping (White) 【Advanced Electrochemical Sensor】A current is generated as soon as it is exposed to carbon monoxide. This means it reacts faster and more accurately than conventional co-detectors and is less susceptible to other gases. It is normal for the product to display 000PPM when there is no carbon monoxide gas in the air. 【Large Screen Display】Not only can you intuitively check the value of carbon monoxide concentration on the large screen display, but you can also clearly see the temperature and humidity conditions that you are concerned about every day. 【Large Capacity Battery】Type-C rechargeable and equipped with a 1200mAh battery. Charging time: about 5.5 hours, can be used for about 60 hours with free charging. 【Compact and Portable】Palm-sized and weighs only 64g, making it easy to carry and perfect for outdoor activities such as camping. There is a strap hole on the main unit, and you can hang it with the included strap. ※This alarm only detects carbon monoxide. It cannot detect other toxic gases.