Introduction

Whether you want to protect your home, shop, or office, choosing the right CCTV system is one of the most important security decisions you will make. With IP cameras, AHD cameras, NVRs, DVRs, and a wide range of brands on the market, it can feel overwhelming. This guide breaks it down for you.

1. Understand Your Requirements

Before buying any equipment, answer these key questions:

• How many cameras do you need?
• Will they be used indoors, outdoors, or both?
• Do you need night vision (IR) or colour night vision?
• How many days of recording do you need to store?

2. IP vs AHD Cameras

IP Cameras offer higher resolution (up to 8MP/4K), remote viewing over the internet, and flexible installation. They are ideal for larger premises where image quality is critical.

AHD (Analog HD) Cameras are more affordable, easy to install over existing coaxial cable, and suitable for small to medium setups where budget is a priority.

3. Choose the Right Recorder

IP cameras require an NVR (Network Video Recorder), while analog cameras use a DVR (Digital Video Recorder). Make sure the recorder supports the number of cameras you plan to install, plus a few extra channels for future expansion.

4. Storage Capacity

For continuous 24/7 recording, a general rule is:

• 1TB HDD ≈ 7–10 days of recording for 4 cameras at 1080p
• 2TB HDD ≈ 15–20 days for the same setup

Always use surveillance-grade HDDs such as WD Purple or Seagate SkyHawk for reliable 24/7 operation.

5. Trusted Brands

We recommend Hikvision, Dahua, CP Plus, and Uniview for IP and AHD cameras — all of which we stock and support at Divine Tech Solution.

Conclusion

The best CCTV system is one that matches your specific needs and budget. Contact our team at 9860561590 or visit our office at Buddhnagar, Kathmandu for a free consultation and site assessment.