【5-in-1 Portable Design】CF-9R CO air quality monitor can detect carbon monoxide, temperature and humidity in real time. It has a stopwatch, a flashlight, and can be inserted into an SD card to facilitate data recording and exporting. It has a mini size of 1.18 * 2.4 * 4.33 inches and can be easily put into a pocket.

【Lighting and Timing Design】Portable travel carbon monoxide detector with built-in strong flashlight and timing function. Emergency lighting helps prevent you from getting lost while traveling; the timer allows you to plan your time scientifically and precisely control the time when cooking in the kitchen.

【Intuitive& Safety Alarm】The rv carbon monoxide detector is equipped with a clear LCD display and a loud alarm. The three-stage alarm system clearly assesses air safety. The alarm threshold can be customized and the alarm can be turned off by pressing the power button.

【Energy Saving Design】The screen will dim after 1 minute of non-use. Even if you use the carbon monoxide alarm in the bedroom at night, it will not affect your sleep, and it is more power-saving. Press any button to light up the screen.

【Built in 3000mAh Large Capacity Battery】 This small carbon monoxide monitor is equipped with a 3000mAh battery, can standby for up to 148 hours, and supports Type-C charging. This travel CO Monitor can help you detect gas and air pollution in homes, offices, schools, cars, hotels, travel, camping, parties and other places, prevent carbon monoxide poisoning, and protect you and your family in a healthy air environment.

【24 Hour Customer Service】Our carbon monoxide sensor have a 12-month warranty and lifetime technical support. If you have any questions about the goods you received, please contact our customer service team as soon as possible. We will serve you wholeheartedly within 24 hours.