i am fitting smoke alarms in my house top & bottom of stairs hard wired interlinked with a 3 core...do i need optical smokes bat back up in this situation or ionisation cheers
Depends on the property, but optical down, ionisation up, heat in kitchen.
Also consider ionisation alarms for each bedroom and interlinked CO alarm if you have an open/gas fire.
cheers echos..bought an optical mains + 9v bat back up & an ionisation 9v mains/bat back up today from screwfix ionisation was £12 approx and the photoelectric was £26 ? why is the optical much more expensive ..needed them both anyway so just bought them think they are dicon so presume of a decent quality at that price...+ ive also boarded the loft out fitting a loft ladder hatch kit..using for light storage etc should i fit a detector in the loft..
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