【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. The flat bottom of the detector enables you to conveniently place it on a table.

【Built-in 1000 mAh battery & 120H working time】To increase the working time to 120h, we choose the newest battery and energy-save sensor. 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 range0-500ppm, 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.]; [Temp range 32℉ to 122℉]; [Humidity range0 to 90% RH]. Real time detecting the CO is so important for us to avoid any CO harm.

【CO alert value custom support】To satisfy all our customers’ need of CO alert change, our CO detector supports change CO alert. The default alert value is 50ppm, And the customizable CO value range is 25-125ppm. Please carefully read the manual before planing to change the CO alert value.

【Widely use compact and portable CO detectors】With compact and portable design, our carbon monoxide detectors is perfect use for outdoor and indoor occasions. 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. Don't test it by car exhaust or airy place, too low CO consentration can't not trigger sensor to work.