Portable 3-in-1 Carbon Monoxide Detector and Air Quality Monitor with Lanyard, Alarm, and Built-in Battery (Orange)

About this item

• This 3 in 1 Carbon monoxide detector features a compact design and includes a hanging lanyard. With dimensions of 3.3 x 2.0 x 0.66 inches, it is easy to take with you wherever you go.
• Portable Designed. Perfect for outdoor and indoor activities, camping tents, boats, aircraft, stove heating, vehicles, and other confined spaces. It is so good helper for you.
• 【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. Don't test it by car exhaust or airy place, too low CO consentration can't not trigger sensor to work.
• 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 is no operation or alarm signal, but the detector still continue detecting CO per 2s. The audible alarm will sound "di" every minute when battery is low power. New power-save mode helps to improve the ful charged detector working time to 60 hours.
• 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.
• Electrochemistry working method. More accurate detection of carbon monoxide. There is no delay, real-time monitoring, and data is refreshed every 2 seconds shows on the color HD 1.9’’ screen, so that you can always know the air quality of the environment.