There are basically 4 types of home surveillance systems:
- Analogue
- HD-SDI - High Definition Serial Digital Interface
- IP -Internet Protocol
- Hybrid
Understanding these 4 would help in selecting an appropriate surveillance system to meet both your needs and budget.
Analogue - This is the cheapest of all three and is the most readily available in do it yourself (DIY) kits from manufacturers such as Swann, Q-See, Night Owl and Lorex. There are also many cheap generic unbranded options available.More than likely you would see these being advertised in newspapers, electronic retail stores and even some groceries.
The main components of an analogue CCTV system consists of a Digital Video Recorder (DVR), Analogue cameras, Power supply and a monitor. The amount of cameras that can be accommodated depends on how many channels or BNC camera inputs are on the DVR. The picture below shows an analogue DVR with 16 channels
For instance a 16 Channel DVR can accommodate up to 16 cameras.You may see DIY kits being sold with 4 cameras and an 8 channel DVR. This simply means that the DVR can accommodate 8 cameras in total.
The diagram above shows the various components being connected to the internet via a router and a modem for remote monitoring.
The cable usually used for hooking up the cameras to the DVR is siamese cable which consists of coaxial for video transmission and a 2 conductor 18 gauge cable for power. The video below explains a bit more on cabling.
These CCTV systems, though very budget friendly provides the lowest picture quality as video recordings are captured in an analogue format and then processed by the DVR into a digital format for storage and transmission. If high video quality is required please see our subsequent posts on HD-SDI and IP systems.
- Remote Viewing on PCs and Smart Phones.
- Motion Detection with email alerts.
- Alarm features.
The following are links to local suppliers of DIY CCTV AnalogueSystems:
PriceSmart
Trinitrolley
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