I am going to replace all the old hardwired smoke detectors in my house.
In my research I have found some of the features available include 10-year batteries and dual sensor types (photoelectric & ionization) .
However the 10 year battery doesn't seem to be available in a hardwired detector.
Would it make sense to switch to the 10 year battery model, which means not using the pre-existing wiring in my house? Even with a hardwired system there are batteries to replace annually, so moving to the long life battery would be nice. But I feel like it might be silly to ignore the hardwired setup that I already have.