Skip to main content

Commercial Video Surveillance

A camera system is only as good as what it can actually show when you need it. We plan coverage first, then install, aim and set up IP cameras for commercial, industrial and multi-residential buildings, yards and parking areas.

Multi-sensor camera on a wall arm against dark metal cladding.
Multi-sensor camera on a wall arm.

Scope of work

Each part of the system, and what we do on it.

Scope of work: video surveillance
PartWhat we do
CamerasDome, bullet, panoramic, fisheye and PTZ IP cameras for interiors, exteriors, docks and stairwells
Multi-sensorSeveral camera views in one housing on one cable: a full field of view, and a common replacement for an old PTZ
Licence platesLicence-plate (LPR) cameras at gates and entrances, set up to read plates day and night
ThermalThermal cameras that pick up people and vehicles in darkness, glare and bad weather
MountingWall, corner, pole and non-penetrating roof-sled mounts; exterior work in winter conditions
RecordingOn-site recorders, recording at the edge on each camera, or cloud recording
SoftwareVideo management software set up with user accounts, camera names and video analytics where they help
AimingEach camera aimed and focused to the coverage plan, with a fixed network address so it doesn't drop off the recorder
HandoverCoverage reviewed with you on screen, and operators trained to find and export video

The final scope follows the drawings, the site walk and what each trade supplies.

Planning coverage

Start with what each camera has to show. Seeing that someone crossed a yard, recognizing a person you know, and identifying a stranger or a plate are different jobs, and each needs more detail on the subject than the last. A camera that detects movement at the fence won't identify a face there.

Mounting height and angle decide where a camera's blind spot falls and how far it sees usefully. We plan overlap so the area under one camera is covered by the next, rather than finding the gap at handover.

Why fixed addresses matter

Every camera we aim gets a fixed network address. A camera that picks up a new address after a power cut can drop off the recorder without anyone noticing until footage is needed.

12345
1
Camera, height and tilt
Mounting height and tilt set the blind zone at the base and the useful far limit, before any lens is chosen.
2
PoE cabling
One cable carries power and video. Cable length usually limits where a camera can go.
3
Recorder and storage
Recording continues on site if the internet connection drops. Storage is sized from resolution, frame rate and how many days of video you need to keep.
4
Blind zone
Nothing directly beneath a camera is covered. The next camera is placed to see that area.
5
Coverage bands
Identify, recognise and detect are pixel-density bands — roughly 250, 125 and 25 pixels per metre. A camera that detects at the fence will not identify at the fence.
A camera on a pole, seen from the side: what it covers on the ground, and how much detail it sees at each distance.

Questions

Can you add cameras to our existing system?
Usually. We work with systems from the major commercial manufacturers, including ones someone else installed. We can add cameras or finish a system that was left incomplete.
Why replace a PTZ with a multi-sensor camera?
A PTZ looks one way at a time. A multi-sensor camera records its whole view all the time, from one housing on one cable, with no motor to wear out.
Can cameras go on stairwells on every floor?
Yes. In multi-residential buildings we run conduit up the stairwells and put a camera on each landing, all back to one recorder.
All questions about video surveillance and more

Read more

All services

Need video surveillance work?

Tell us about the building and what you need. A few lines is enough; drawings can follow by email.

Photo from one of our jobs