Please help me to channel into the walls just once... :-)
I want to install two or three mains smoke alarms, and interlink them (so when one goes off, they all go off).
What type of smoke alarm is recommended for a hall way near a kitchen, a den, and an upstairs landing?
As I'll probably put the wiring into the walls before buying the smoke alarms, what cable should I lay to power and interlink all three devices?
Cheers, David.