[16 PoE Ports, Expandable to 32 Cameras]- Scalable for Large Properties: Start with 16pcs 4K cameras and expand up to 32 with an additional PoE switch (supports ZOSI 8MP/5MP cameras).Plug-and-Play Setup: Includes PoE cables for easy installation—no extra wiring needed. 【One-Way Audio & Metal Weatherproof Design】--With built-in microphone in the camera It can support a one-way audio, you can hear the other party talking, but not the conversation.while the aluminum metal housing ensures IP66-rated weatherproof durability. Ideal for indoor/outdoor use in any conditions. 【AI-Powered Hourly People Counting】--This system automatically counts people entering and exiting any space (stores, offices, venues, etc.), providing reliable hourly data to optimize operations, improve customer experience, and enhance security. 【Smart Person/Vehicle Detection & Instant Alerts】--Advanced AI accurately distinguishes people & vehicles from other motion, reducing false alerts by 90%. Get real-time notifications via app alerts, emails, or siren alarms when threats are detected—ensuring you never miss critical events. [ No Monthly Fees – 4TB HDD for Local Storage]- Pre-Installed 4TB Hard Drive: Store footage locally with no cloud subscription required.Auto-Overwrite or Backup: Continuous recording ensures no critical evidence is lost.Expandable Storage: Supports up to two 8TB HDDs (sold separately) for extended recording.