What is the sound detection level required for alarm systems in decibels?

The sound detection level required for alarm systems is often set at 65 decibels. This level is typically based on the need for alarms to be loud enough to alert individuals in the vicinity without being so intrusive that they cause unnecessary disturbance. A sound level of 65 dB is considered effective for ensuring that the alarm can be heard above common background noise levels in residential or commercial settings, thereby fulfilling the primary function of an alarm system, which is to alert occupants and deter potential intruders.

Lower sound levels, such as 55 dB or 60 dB, may not be sufficient to penetrate common ambient noises, making them less effective in alert situations. Conversely, a sound level of 70 dB could be perceived as overly intrusive or even alarming to people nearby, which may not be desirable in many environments. Thus, 65 dB strikes a suitable balance between effectivity and consideration for the surrounding environment.