Review on Monoxide Hardwired Standards Auto Check AJ 933 by Michael Godo

We needed a carbon monoxide/smoke alarm that we could mount next to the water heater. We already had a wired system throughout the house, but with the new water heater we got I wanted something special for it. The battery is rated to last 10 years, so you don't have to worry about replacing it every year. When I activated the alarm it was very loud and shrill so everyone could hear it. This is a great security device for your home.