Dahua 4 Megapixel IP Security Cameras
The Dahua 4 megapixel camera lineup represents the ideal balance of image quality, storage efficiency, and cost-effectiveness for the vast majority of professional surveillance deployments. At 2560×1440 resolution (also known as 2K or QHD), a 4MP camera captures 3.7 million pixels per frame — delivering 2.5× more detail than a standard 1080p camera, which makes a real difference when you need to identify faces, read license plates, or review point-of-sale transactions.
Why do professional installers default to 4MP? Because it's the highest resolution that still records efficiently at 25–30 frames per second on affordable NVRs without crushing your hard drive capacity. A typical 4MP Dahua camera running H.265+ compression uses roughly 4–8 Mbps of bandwidth — meaning an 8-channel 4MP system can run comfortably on a single 4TB surveillance hard drive for 30+ days of continuous recording.
What's available in this tier:
- Dome cameras — Vandal-resistant IK10-rated housings ideal for retail, schools, and public areas where the camera body itself needs protection
- Bullet cameras — Long-range IR illumination (up to 60m/200ft) with visible deterrent form factor; best for perimeters, parking lots, and exterior walls
- Turret cameras — The "eyeball" design that combines the flexibility of 3-axis adjustment with a compact, less intimidating profile; excellent for indoor commercial spaces
