Public fire alarm system wireless street boxes are self-powered and required to operate for at least how long?

Public fire alarm system wireless street boxes are self-powered and required to operate for at least how long?

• A. One year
• B. Six months
• C. One week
• D. One day

Answer: (B)

These street boxes must stay ready to operate without relying on external power, so their internal energy source has to run for a substantial period between service checks. The minimum duration required is six months, which ensures the box can function during power outages or periods between maintenance without needing constant battery changes. This six-month standard balances reliability with practical maintenance needs. Short periods like a day or a week would lead to too-frequent servicing, while a longer period, though possible, is not the minimum the requirement specifies; the question is asking for the minimum duration.

These street boxes must stay ready to operate without relying on external power, so their internal energy source has to run for a substantial period between service checks. The minimum duration required is six months, which ensures the box can function during power outages or periods between maintenance without needing constant battery changes. This six-month standard balances reliability with practical maintenance needs. Short periods like a day or a week would lead to too-frequent servicing, while a longer period, though possible, is not the minimum the requirement specifies; the question is asking for the minimum duration.