A lot of people asking "what is CCTV" are really asking something more practical: is it the same as a security camera, do I need special equipment, and what does closed-circuit even mean when everything streams to a phone app anyway.
TL;DR:
CCTV stands for closed-circuit television, a camera system sending footage to a private, closed set of monitors or recorders rather than broadcasting publicly. Today that means a camera connected to a recorder (NVR or DVR) storing footage locally, usually viewable remotely via app. It is not a broadcast TV signal, and it does not require a subscription to function, though some brands push one.
"Closed-circuit," explained. Television signals were once normally broadcast openly. A closed-circuit system sends its signal only to specific connected devices, originally a monitor wired directly to the camera, rather than broadcasting to anyone with a receiver. Modern systems follow the same principle: footage goes to your own recorder and app, not a public network.
How it works today. Cameras capture footage and send it, over cable (wired) or Wi-Fi (wireless), to a recorder. An NVR (network video recorder) suits modern IP cameras; a DVR (digital video recorder) suits older analogue-style ones. Most systems let you view live or recorded footage remotely via a phone app.
CCTV vs a standalone smart doorbell. A full CCTV system records to local storage you own, typically no subscription needed. Many standalone smart cameras and doorbells rely on cloud storage, which usually does require a subscription beyond a short rolling window. Neither is wrong, they solve slightly different problems.
Do you need council approval? Generally no. Cameras must not point into a neighbour's private areas, audio recording may need consent under state law, and signage requirements mainly apply to commercial premises. Strata properties can have additional rules.
A concrete example
To make this less abstract: a typical entry-level CCTV setup is the HiLook 6MP AI CCTV Security Kit, up to four IP67-rated cameras connected by PoE cable to an NVR with 2TB of local storage included, viewable remotely through the free HiLook app. That is the whole system described above in one real, purchasable product.
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Shop CCTV KitsFAQ
Is CCTV the same as a security camera?
Broadly yes in everyday use, though CCTV technically means the whole closed-circuit system, not just the camera.
Do I need internet for CCTV to work?
No, a wired NVR system records locally without it. Internet is only needed for remote viewing.
What's the difference between an NVR and a DVR?
NVR works with modern IP cameras; DVR works with older analogue-style ones. NVR is the standard for new installs.
If you're working out what to actually buy, read the home security cameras buyer's guide and wired vs wireless comparison next. Browse security camera systems and NVR kits.
