well the only ones i know are the ones that just stick there - they are in no way connected to an electric supply as they ahve their own battery
i had some done by a fireman a while ago , and they do them for free , but dont quote me on that ,if you dont have them they were very good
I do as Taylortwocities does, put on a regularly used lighting circuit.Evening all...just after your choices on smoke alarms in dwellings..do you put them on there own circuit rcd protected on a split load board? Or on a seperate RCBO...
you won't get to know that the supply has failed, unless its your habit to go squinting at the power light inside the alarm on an hourly basis!
maybe im just using expensive alarms, but all this talk about owners not knowing if power fails to their alarms I cant understand as the ones ive always fitted... when the backup battery starts to go flat they produce an annoying bleeping sound intermittently until power is restored to recharge them, and theres no way you would miss that.
In domestic environments, it is best to power smoke alarms from a regularly used lighting circuit.
The problem with a stand-alone MCB/RCBO is that you won't get to know that the supply has failed, unless its your habit to go squinting at the power light inside the alarm on an hourly basis!
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local