You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product?
Review title: the worst kind of rubbish
Product review: Seven of these were installed in a newly renovated house we bought 3 months ago. Now one remains. Constant low battery alerts despite having just changed the (not cheap) 9V battery. False smoke alarms up the wazoo. An ear-shattering cacophony every time one went off, as the other 6 units took up the hue and cry. The final blow was 3 carbon monoxide alerts in 2 days, with 1) the oil furnace not running, 2) no other sources of combustion in the house, and 3) my ADT-monitored CO detection system proclaiming all was well.I took down 6 of these and smashed them into plastic dust. My children called me a hero. DO NOT BUY, unless lack of sleep/peace of mind/sanity and visits from the fire company telling you your units are defective are luxuries you can live with.
