We get called out to fix CCTV systems every week — and in most cases, the system was bought and installed less than two years ago. The pattern is depressingly familiar: cameras in the wrong places, a recorder that's full, footage that can't identify anyone. Almost every one of these failures traces back to one of the seven mistakes below. Here is what goes wrong, and how to make sure it doesn't happen on your site.
1. Buying cameras before planning the coverage
This is the biggest and most expensive mistake: ordering a box of cameras and then deciding where they go. Coverage should start on paper — a floor plan marked with every entrance, corridor, stockroom, loading bay and perimeter stretch, plus what each view is supposed to capture (general awareness, face identification, number plates). A professional site survey takes under an hour for a typical office. Skip it, and you end up with blind spots at the back door and three cameras pointing at the same empty corridor.
2. Too few cameras — and the blind spots that follow
Businesses routinely underestimate how many cameras a site needs. One camera per room is rarely enough: corners, corridors and high shelving create blind spots that a single view can't close. The fix costs less than people think — proper overlap with a couple of extra cameras is far cheaper than discovering, after an incident, that the critical angle was never recorded. If in doubt, plan for overlap at every chokepoint: doors, gates and stairwells.
3. Mounting cameras too high
Cameras get mounted high — up on a 6-metre pole or tucked under a warehouse roof — because it's easy and keeps them out of reach. The footage then shows the tops of heads, which is useless when you need to identify someone. For face identification, cameras belong at 2.5–4 metres with a clear, near-head-on angle. High mounting is fine for wide-area overview (watching a yard or a car park), but pair it with lower cameras at the entrances and exits where identification actually happens.
4. Ignoring lighting and backlight
A camera pointed at a glass entrance door or into the morning sun produces silhouettes, not faces. Similarly, a camera installed in a dim corner without any low-light capability records noise after dark. During the survey, note where light comes from at different times of day, and specify cameras with genuine low-light performance for the dark spots — lines like Hikvision ColorVu and Dahua WizColor, which we supply, produce full-colour images in very low light, which is far more useful for identification than grainy infrared.
5. Undersized recorder and no room to grow
NVRs come in fixed channel sizes — 4, 8, 16, 32. Businesses that buy a recorder sized for today's camera count end up replacing it entirely when they add four cameras for the new stockroom. Always leave 20–30% spare channels, and run cabling that's easy to extend. The same goes for storage: decide your retention target (30, 60 or 90 days) up front, because higher resolutions and more cameras multiply hard-drive requirements fast.
6. No plan for remote access
Decide on day one who watches the footage and from where — the owner's phone, a security room, a branch manager's laptop. Systems installed without remote access configured usually stay that way, which means nobody looks at the footage until something goes wrong. Modern NVRs support secure mobile viewing; have your installer set it up and test it before sign-off, and keep the firmware updated so the remote-access path stays secure.
7. Installing and forgetting
A CCTV system degrades from day one: lenses gather dust, cameras drift off their marks, hard drives fail, firmware goes stale. We regularly find systems that stopped recording months before anyone noticed. Build in a simple maintenance routine — quarterly checks of angles, lenses, recorder health and storage — or cover it with an annual maintenance contract so someone else is watching the system's health. And before you finalise the design, confirm any site-specific requirements with your installer: certain commercial premises in Dubai may have SIRA requirements for CCTV — confirm applicability before the system is specified.
The short version
Plan on paper before you buy, mount cameras at face height where identification matters, respect the lighting, size the recorder and storage with headroom, configure remote access on day one, and maintain the system once it's running. Get these seven points right and the system will still be doing its job in year five — get them wrong and you're paying twice: once for the installation, and again for the fix.
Avoiding these mistakes starts with a proper survey: an engineer walks your premises, marks camera positions on your floor plan, and sizes the NVR and storage to match. Request a quote, call us on (04) 359 4874, or message us on WhatsApp at +971 52 562 1946 for a free site survey — we'll design a system that covers your site properly the first time.
