My home is 15 years old, and I think the smoke detectors are as old. Today one of them went off and would not shut off. The model is ESL 449CST. I would like to replace it, hopefully with something newer model, and maybe replace all of them around the house.
I find this one highest rated on Amazon. Will it work as a replacement? In the questions asked/answered on that page, there are questions about it replacing "hard-wired units". What are those? Was the 449CST a hard-wired model? When I detached it from the ceiling I had to detach a power-cable that seems to connect to all the other units too. Is that 'hard-wired'?
Frankly I would not mind stand-alone units instead of connected ones; but are there any downsides to it?
I find this one highest rated on Amazon. Will it work as a replacement? In the questions asked/answered on that page, there are questions about it replacing "hard-wired units". What are those? Was the 449CST a hard-wired model? When I detached it from the ceiling I had to detach a power-cable that seems to connect to all the other units too. Is that 'hard-wired'?
Frankly I would not mind stand-alone units instead of connected ones; but are there any downsides to it?
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