I haven't got smoke alarm in the loft, the equipment hasn't been installed yet.I was thinking of interlinking,but I have been told by a solar frim it has to be hard wired, but I can find no confirmation of that.
I am thinking about having solar panels and I am going to have the inverter and battery in the loft. Does a fire alarm there have to be hard wired or can I use one with a 10 year battery.