Whistle Dahua Ideal for round bar track

Ideal for round bar track

LED on/off selection

professional-grade solution for large-scale or distant surveillance needs

and solid 2MP performance in a scalable NVR platform—perfect for users seeking dependable coverage with smart features and straightforward setup

A 500GB SATA HDD delivers generous storage (typically 1–4 weeks of 1080P recording

Whistle Dahua Ideal for round bar trackA small, inexpensive acoustic device or wind instrument that produces a loud, high pitched, and shrill sound by forcing air or steam against a sharp edge or into a cavity. It is commonly used for signaling for safety. Stainless Steel metal whistle.