It is good to have a Carbon Monoxide Detector in your home. We have one now on each floor. This Carbon Monoxide Detector is easy to install by just putting in a 9V battery that is included. I like that you can put this on your wall or you can have it putting on something. There is a little kick stand on the back side. It has a clock on it as well as a battery level.There is 2 button one for test/reset and on for setting mode. The LCD display is big and bright easy to read. It is easy to set it as well. Everyone should have at lease one in there homes. Made and built well great quality .