Home security camera guides

How the parts fit together: placement, wiring, recording, the network, and the law that applies to all of it.

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24 pages

• Audio Recording and Security Cameras

  Why audio on a security camera is a different legal question from video, how all-party consent works, and when to just turn the microphone off.

• Home Security Camera Laws and Privacy

  A general guide to home security camera placement, property lines, and reasonable privacy, plus what every homeowner should check before mounting one.

• Security Camera Maintenance Checklist

  A realistic maintenance schedule for a home security camera system: lens cleaning, playback tests, PoE budget checks, cable retesting and UPS testing.

• Camera Mounting Height and Angle

  Camera mounting height and angle explained: the 2.5 to 3 metre convention, how down-tilt is worked out, and how to find the blind spot under a camera.

• Keeping a Security Camera Secure

  Practical steps to stop an internet-connected security camera from being the weak point in a home network, from default passwords to VLANs.

• Security Cameras in Cold Weather

  Why security systems fail most often in winter: heaters pushing PoE cameras to a higher power class, switch budgets running short, and battery capacity loss.

• Reducing False Motion Alerts

  Why most false security camera alerts come from detection zone shape, not the camera, and how to reshape a zone to the actual approach path instead.

• HOA and Landlord Camera Rules

  How homeowners association covenants and landlord rules add a private layer of restriction on top of general camera law, and what to check first.

• How Many Channels Does Your NVR Need?

  How many channels a home NVR needs, why buying one size above your camera count avoids replacing the whole recorder, and what 4, 8, 16 and 32 fit.

• How to Choose Security Camera Resolution

  Security camera resolution compared by horizontal pixels, not megapixels, using EN 62676-4 DORI distances plus bitrate and storage tradeoffs from 2MP to 12MP.

• How to Install a PoE Security Camera

  How to install a PoE security camera step by step: mounting, running cable within the 100 metre limit, powering it correctly, and configuring it.

• Lightning and Surge Protection for Cameras

  Why a long copper run between separate buildings is a genuine lightning risk, how fibre removes it, and where surge protected UPS units fit in-building.

• Where Your Footage Actually Lives

  The real tradeoff between cloud camera storage and a local NVR: who holds your recordings, what it costs over time, and what happens without power.

• Motion Detection and Detection Zones

  How EN 62676-4 pixel geometry sets the practical floor for motion detection, and why detection zone shape, not sensitivity, controls most false alerts.

• How Security Camera Night Vision Works

  How security camera night vision works: published infrared range versus real identification distance, and why colour night vision keeps clothing colour.

• Setting Up a Network Video Recorder

  How to size and set up a network video recorder: retention targets, real drive capacity after overhead, surveillance-rated drives, and UPS runtime.

• How Power over Ethernet Actually Works

  How PoE actually powers a security camera under IEEE 802.3, the difference between switch budget and camera draw, and how to size a switch correctly.

• Power Backup for a Security System

  How UPS runtime is actually calculated for a security system, why the VA number on the box is not the watt rating, and how to size backup power correctly.

• Security Cameras for Renters

  What a tenant can and cannot do with security cameras: lease restrictions on drilling, a landlord's limits, and non-destructive mounting options.

• Running Cable for Security Cameras

  How to run cable for PoE security cameras: solid copper versus CCA, the 100 metre ANSI/TIA-568 channel limit, terminations, and diagnosing a bad run.

• Troubleshooting Security Camera Dropouts

  An ordered checklist for camera dropouts: cable length, terminations and PoE budget checked first, cheapest and most likely causes before the camera itself.

• Varifocal vs Fixed Lens Cameras

  Varifocal versus fixed lens security cameras compared with real DORI distances at 2.8mm, 4mm and 8mm focal lengths on the same 4K sensor and lens geometry.

• Weatherproofing Outdoor Cameras

  What IP ratings actually promise, why the connector rather than the camera body usually fails outdoors, and how a junction box and UV rated cable prevent it.

• Where to Place Security Cameras on a House

  Where to place home security cameras by entry point, the camera count convention, mounting basics, and the privacy and audio consent rules to check first.