HAKINAKU Portable Carbon Monoxide Detectors [3-in-1] Mini Size CO Monitor With Kickstand & Lanyard [ CO Temperature Humidity Sensor ] For Outdoor Camping Travel RV Home Hotel (Grey)

CO data is 0 when air is healthy How to test the CO detectors before use? Carbon monoxide is a colorless, odorless, and non irritating toxic gas that is harmful to the human body. Before use our CO detector, we can take this detector to approach the smoke generated by unburned paper or cigarettes,the CO value will change, and the alarm will sound di di di when reaching the alarm value. 【3-in-1 Multifunctional CO detector】Our portable carbon monoxide detectors are not only capable of detecting CO levels, but also temperature and humidity, and data is displayed on a colorful 1.5'' HD screen clearly. With a 2s refresh rate sensor , we can quickly determine the surrounding CO value and overall air quality, real-time knowing the environment is safe or not. 【Portable design CO detectors with lanyard & Magnet】Our mini CO detectors are designed to be portable and convenient. With dimensions of 3.0x2.7x1.2 inches, they are compact and easy to carry. The strong lanyard allows you to hang it anywhere you want, such as on the wall, backpack, tent inside, car, RV, and more. Additionally, the built-in magnet allows you to easily attach it to metal items. And also our CO detectors support type-c fast charging, you can use your own fast charging adaptor and cable to charge it full in 1 hour. 【More Accuracy 3in1 CO detectors】2s refresh time detecting Carbon monoxide / Temperature / Humidity. [CO range:0-500ppm, 0-49ppm: Green bar flashing; 50-99ppm: Yellow bar flashing with normal “di di di” sound alert; 100-500ppm: Red bar flashing with rapid “di di di”sound alert. 【CO alert value custom support】To satisfy all our customers’ need of CO alert change, our CO detector supports change CO alert. Please carefully read the manual before planing to change the CO alert value. We can use it in bedroom, living room, kitchen or cellar. And also, it is a perfect tool for detect air safe when traveling, Hotel trip, in car, RV travel, camping, picnic, business trip, or indoor barbecue . 【How to test it ?】 Carbon monoxide is generated in incomplete combustion and dense smoke. We can take it close to a cigarette or burning paper that produces thick smoke. The CO concentration will change and show on the screen.