In Autumn 2002, British Standards relating to the Installation and Maintenance of Fire Alarms (BS 5839) were revised and section 3 includes measures to limit false alarms. The responsibility to limit false alarms not only rests with system designers, but also companies with fire alarms have a responsibility to service and maintain these systems and take due care to limit false alarms. The changes have also changed the way in which alarm activations are recorded in your Fire log book. The maximum visits between servicing is now six months and there has to be a written contract of maintanence for the fire alarm.