Top critical review
Did not last long
Reviewed in the United States on May 9, 2018
I have had two of these fail at just under three years, just a couple months shy of each other. Each had battery corrosion on the same terminal. These had the original batteries from Kidde. Once the alarm started doing a low battery chirp, I found the problem. Replacing the batteries in each unit didn't fix it. They kept on chirping. I think the corrosion just kept the terminals from continuing to work. The units required replacing. I think this is a safety issue as well as an unnecessary expense.
Update June 2018 - a third has failed now with the same issues
Update October 2018 - a fourth has failed with the same issue