Yes, unlike gas there isn't any things to say you can't replace them yourself, also even though the wires are the same double check when switching the smoke alarm as I had to rewire one recently that was slightly different.
Thank you!
@Cupcakes started
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Yes, unlike gas there isn't any things to say you can't replace them yourself, also even though the wires are the same double check when switching the smoke alarm as I had to rewire one recently that was slightly different.