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CCTV Cameras (Hikvision, Dahua, Uniview):

1. Resolution: Cameras are available in various resolutions, such as 720p, 1080p (Full HD), 4MP, 5MP, 8MP (4K), etc. Higher resolution provides clearer images.
2. Day/Night Vision: Cameras often have infrared (IR) LEDs for night vision, allowing them to capture images in low-light or complete darkness.
3. Wide Dynamic Range (WDR): WDR technology helps balance lighting in scenes with high contrast, ensuring clear images in challenging lighting conditions.
4. Varifocal Lens: Some cameras come with varifocal lenses, allowing users to manually adjust the focal length for a customized field of view.
5. Pan-Tilt-Zoom (PTZ): PTZ cameras can be remotely controlled to pan, tilt, and zoom, providing flexible coverage of large areas.
6. Weather Resistance (IP Rating): Outdoor cameras are often designed to be weather-resistant, with an IP66 or higher rating for protection against dust and water.
7. Power-over-Ethernet (PoE): PoE cameras can receive power and data over a single Ethernet cable, simplifying installation.
8. Motion Detection: Cameras can be equipped with motion sensors to trigger recording or alerts when motion is detected.
9. Audio Support: Some cameras have built-in microphones for audio recording, and some support two-way audio communication.
10. Smart Analytics: Advanced models may offer smart analytics features, such as facial recognition, intrusion detection, and object tracking.
11. H.265+ Compression: Efficient video compression technology reduces bandwidth and storage requirements.

DVR (Digital Video Recorder – Hikvision):

1. Number of Channels: DVRs come with a specific number of channels, indicating the number of cameras they can support.
2. Recording Resolution: The DVR records footage at a specific resolution, often matching the camera resolution.
3. Storage Capacity: DVRs have internal storage for video footage. Some models support external storage expansion.
4. Remote Access: Users can remotely access the DVR to view live or recorded footage over the internet.
5. Mobile App Integration: DVRs can integrate with mobile apps for convenient remote monitoring.

NVR (Network Video Recorder – Dahua, Uniview):

1. Network Cameras: NVRs are designed to work with IP cameras over a network. They support various IP camera brands.
2. Recording Resolution: Similar to DVRs, NVRs record footage at specific resolutions.
3. PoE Support: Some NVRs have built-in PoE ports, simplifying the setup of IP cameras.
4. Storage Capacity: NVRs support internal and external storage for storing video recordings.
5. Remote Access: Users can remotely access the NVR to view live or recorded footage via the internet.
6. Mobile App Integration: NVRs can integrate with mobile apps for remote monitoring.

CCTV System (General):

1. Integration: Components from Hikvision, Dahua, Uniview, and other brands can often be integrated into a comprehensive CCTV system.
2. Centralized Management: Systems allow centralized management of multiple cameras and devices.
3. Alerts and Notifications: Users can receive alerts and notifications for events like motion detection or system issues.
4. Playback and Export: Users can review and export recorded footage for analysis or legal purposes.
5. User Authentication: Access to the CCTV system is often secured through user authentication and authorization.

Maintenance and Repair:

1. Diagnostic Tools: Systems may provide diagnostic tools for identifying and resolving issues.
2. Firmware Updates: Regular firmware updates ensure that devices have the latest features and security patches.
3. Component Replacement: Faulty components, such as cameras or recorders, can be replaced as needed.
4. Technical Support: Manufacturers or authorized service providers offer technical support for troubleshooting and repairs.

It’s important to note that specific features and functions can vary between models and brands. Always refer to the product documentation provided by the manufacturer for accurate and detailed information about a particular CCTV camera, DVR, NVR, or security system.

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