During periods of sleep (hotels, hostels, etc.) 75dB(A) at the bed head is recommended, to ensure that they are adequately warned. It is important that once the alarm signal has begun to sound that it continues until silenced, either due to a false alarm (alarm verifier), or by the fire service. g519 Reducing unwanted fire signals in order to limit false alarms the owners, occupiers. or other responsible person with control over a building with a fire-detection and fire-alarm system should ensure that. The system remains in working order and is properly maintained Faults are dealt with quickly and efficiently False alarms are investigated and action taken to solve any problem Activities which may affect the system (for example, processes which may produce heat or smoke, redecorating or a change in manufacturing processes) are controlled