as far as i was aware, they now need to have a dedicated circuit. So i cant see the wireless system helping you a whole lot, for the sake of a core the price would be considerably higher. But im not quoting the regulations on that, so id search for it urself.
There was not another thread in the search, so id like to add another query to anyone on this page... Im not majorly clued up on my panel fire alarms. As i understand it the difference between 2 and 4 wire system is the 2 wire combines the smokes and the sounders. Where as you've seperate sounder circuit on your 4 wire...
But what i was trying to find out is.... the wholesaler was quoting us breakglasses 3 times the price, with the excuse the other ones would not work with a 2 wire system... As i understand a breakglass is not much more complicated than a switch. i do not understand how it makes a difference whether the system is a 2 wire or a 4wire is he just feeding me a load of ****?