6x Nemaxx WL2 wireless smoke detector smoke detector interconnectable - according to DIN EN 14604

Ok I have had these for a few years, but finally got sick of them.. sometimes they are super sensitive and go off for seemingly no reason, other times when there is smoke nothing happens. However the most annoying feature is battery life, it seems when the batteries on one start to go, it sets its alarm off, that sets them all off, then you are running round the house looking for either a fire, or one unit with low batteries. And became they have all gone off for 10 minutes, now they all need new batteries again. Replaced all the batteries about 3 months ago, with Duracell pro batteries, but now I need to it again...

Set up as per instructions, working fine.Great support from the seller.But when one has gone off in the real world, it has not set the whole system alerting, whcih is the point of the product. If you need a linked system, this possible is not the one for you.

great item, arrived fast

I wanted to install 4 of these in a property but ended up throwing them in the bin. The setup procedure is a complete nightmare for which you need to wear ear defenders (they are certainly loud, especially during setup with 4 of them in front of you all going off at the same time). If you change a battery in a detector it seems to lose forget it's connection to the others and you have to go right back round the setup process; which would be a nightmare if you had them fitted in place on ceilings. All in all overly complex to setup, and I'd have no faith that they will remain synchronised if somebody replaces a battery.