Author name: Etzard Geldenhuys

DORI/DCRI Classification

Pixel Density guide

Understanding Pixel Density in CCTV systems Have you ever looked at CCTV footage, zoomed to see some detail and suddenly released that the image is pixelated, and you can’t see the details that you expected … Pixel Density determines whether your CCTV footage is actually usable when something happens. Even high‑resolution cameras can fail if […]

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Basic Electronics

Basic Electronics for Alarm Systems This is A beginner‑friendly guide for technicians, hobbyists, and anyone working with low‑voltage security systems. Understanding basic electronics is one of the most valuable skills you can develop in the security industry. Whether you’re installing alarm systems, troubleshooting faults, or building your own projects, the fundamentals stay the same —

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