Fariedl Four-in-one gas detector, outdoor one-oxycarbon dioxide CO concentration alarm ultra-long standby back magnetic suction Gas Detector

4-in-1 function - integrates carbon monoxide detector, temperature monitor, humidity sensor and built-in flashlight to provide real-time safety and air quality tracking at any time. Rechargeable and long-term standby - equipped with a rechargeable battery, it can be used for up to 300 hours when on standby. It is easy to charge via USB and comes with a flashlight function, which is suitable for emergency lighting at home, hotel or camping. Magnetic backplate design - strong magnetic backplate can be quickly fixed in refrigerators, RVs or metal walls. Flexible placement without tools - very suitable for families, tents and outdoor travel. Loud and reliable alarms - The high-sensitivity carbon monoxide sensor provides accurate detection and instant loud alarms when the carbon monoxide concentration rises to help protect your family and ensure peace of mind. Portable and multi-scene use - lightweight, with lanyard, easy to carry when traveling. It can be used as both a carbon monoxide detector and a flashlight, which is very suitable for RVs, cars, hotels and outdoor camping.