Yeah, I will. I wasn't suggesting that I should continue using mine past 10 years (looking at the datestamp on it, it was actually made 3 years before I bought the house, so it is 17 years old). Just noting that many things around my house seem to be working well past when they should.

Looks like Walmart even has one that is the same brand (First Alert) as my current one and appears to use a compatible mounting plate for $7.67, so should be an easy replacement.