Over the last few decades, radio fire systems have dramatically increased in reliability whilst reducing in both size and price. Todays’ systems, from Electro Detectors, boast a long battery life and are as reliable as hardwired systems. Not only are these systems installed in historic buildings, where wires can not be run, but also in a whole host of other premises, including buildings where disruption is a nuisance, temporary projects, and systems that need to be installed in a hurry, whilst still remaining competitive.