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Guides for CCTV & electrical technicians
Practical write-ups from real job-site experience — the mistakes that actually happen, and how to avoid them.
NVR Storage Calculation: 12 Mistakes That Leave You Short on Space
The formula is simple — 12 real-world factors are why the calculated number is often wrong.
IP Camera Bandwidth: Why the Switch (and PoE Budget) Fail First
Switch uplink overload and PoE power budget — the check most junior installers skip.
Analog vs. IP CCTV in 2026: Which Should You Actually Install
An honest, experience-based breakdown — not just "newer is always better."
How to Choose the Right Battery Size for a Security Panel
Exact Ah calculation, series vs. parallel wiring, and why lithium usually wins now.
Choosing the Right CCTV Lens: Coverage vs. Identification Distance
Why a wider lens usually means less detail — and how to actually match focal length to the job.