[3-in-1] Carbon Monoxide Detector Portable Mini Air Quality Monitor with Lanyard Alarm CO Meter Temperature Humidity Sensor Built-in 1000mAh Battery, Indoor/Outdoor (Orange)

Mini design with hanging lanyard. This 3 in 1 Carbon monixide detector is mini design with dimensions: 3.3 x 2.0 x 0.66 inches. It’s so convenient to carry it or hang it to anywhere
Electrochemistry working method. More accurate detection of carbon monoxide. There’s no delay, real-time monitoring, and data is refreshed each 2 seconds shows on the color HD 1.9’’ screen, so that you could all the time know the air quality of our surroundings.
Larger detection range: CO range: 0 to 1000PPM; Humidity range: 0% to 95%RH; Temperature range: -4 to 140 ℉. The cycle alarm works when the CO is over 50ppm.
Built-in 1000 mAh rechargable battery & new power-save mode. To extend the CO detector’s working time, the backlight will turn off when There’s no operation or alarm signal, but the detector still continue detecting CO per 2s. The audible alarm will sound “di” each minute when battery is low power. New power-save mode helps to make stronger the ful charged detector working time to 60 hours.
Portable Designed. Perfect for out of doors and indoor activities, camping tents, boats, aircraft, stove heating, vehicles, and other confined spaces. It’s so good helper for you.
【How to test it ?】 Carbon monoxide is generated in incomplete combustion and dense smoke. We will be able to take it with regards to a cigarette or burning paper that produces thick smoke. The CO concentration will change and show on the screen. Don’t test it by car exhaust or airy place, too low CO consentration can’t not trigger sensor to work.