Portable Carbon Monoxide Detector for Travel, 140H Standby, CO Detector with Magnetic Back, Rechargeable 3-in-1 CO Monitor with Audible & Visual Alarm for Camping, Hotel, Car & RV

• The 3-in-1 portable carbon monoxide detector that can detect carbon monoxide levels from 0 to 1000ppm, alert when reaches 50 ppm. It also measures temperature and humidity.
• Features 1000mAh lithium battery with Type-C fast charging support. A single full charge lasts 140 hours.
• Designed to be compact and lightweight, measuring 7.6x6x3 cm, making it easy to fit into luggage.
• When the carbon monoxide concentration reaches and exceeds 50ppm, the screen's yellow or red indicator bars will flash, accompanied by a high-decibel alarm. As the carbon monoxide concentration increases, the alarm frequency will accelerates.