Cross zoning is designed to reduce false alarms by requiring what?

Cross zoning is designed to reduce false alarms by requiring what?

• A. One predetermined zone to trip
• B. Two predetermined zones to trip
• C. Three zones to trip
• D. All zones to trip

Answer: (B)

Cross zoning uses a verification method that needs two separate zones to be triggered before the system alarms. The idea is that two independent sensors in different zones must go active within a short time window to set off the alarm. This greatly reduces false alerts from a single false trigger, noise, or a stray animal. For instance, if only one zone is activated, there’s no alarm; but if a second, nearby zone is triggered quickly after, the system declares an alarm. So cross zoning is designed to require two predetermined zones to trip.

Cross zoning uses a verification method that needs two separate zones to be triggered before the system alarms. The idea is that two independent sensors in different zones must go active within a short time window to set off the alarm. This greatly reduces false alerts from a single false trigger, noise, or a stray animal. For instance, if only one zone is activated, there’s no alarm; but if a second, nearby zone is triggered quickly after, the system declares an alarm. So cross zoning is designed to require two predetermined zones to trip.