Two virtual lines are set; alarms trigger only when both are crossed in a specified order and interval.
Enhances tripwire functionality by setting two lines and detecting passage between them in a specific direction (e.g., "outside to inside").
This reduces false alarms and is suitable for gates or entrances with one-way monitoring.
Use Cases
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出入口の一方通行監視に使用。外部からの侵入時のみアラームを出す。
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駐車場の一方通行の進入口に設置し、逆走車両の進入だけを検知。