10 years lifetime CO alarm

Product Description  CO sensor fault warning Carbon Monoxide Alarms 3 years battery life time Test/Hush button  Low Battery warning CO concentration≥ 300ppm will trigger alarm in 2 minutes Where fit to install Fire Alarm ？ 1. At first, you need install them in your bedroom and route way, and should install one item in every bedroom at least. 2. Stairway is important for you to rush out when fires occur, so there must install smoke detectors. 3. You at least require one smoke alarm on every floor,including finished attics and basements. 4. Install one alarm beside every electric facility. 5. Install smoke alarms in the middle of ceiling,because smog,heat and flashes always lift to the top of rooms. 6. If some reasons cause you can’t install them in the middle of ceiling,you need to install them at least 10cm away from the wall. 7. If you like to install them on the wall, they should be installed 10-30.5cm away under the ceiling.…