When it comes to safety of your home or business, best security system is the optimal choice. In this article, I will explain the variety of video surveillance systems, and will focus on how to choose the most suitable for your needs security camera system.
Security cameras can be used anywhere indoor, outdoor, hidden and even on the vehicle. Regardless of the type of video surveillance set up, systems are designed to provide visual observation of the object by CCTV cameras. With latest surveillance equipment you can monitor protected premises as a single location or multiple locations at once.
There are digital and analog video surveillance systems.
Analog system uses video cassette recorder (VCR) to store footage received from security camera. Inability to view video over the internet and low recording quality is serious drawback for analog CCTV to compete with digital systems. Therefore manufacturers stopped producing analog systems and switched to digital, just like photo industry did.
Digital video surveillance systems based on the principle of binary encoding of information that improves performance reading and writing data speed, improves quality of the signal transmitted by the camera and allows off-site internet viewing. Most digital surveillance systems have motion activated recording. This function allows digital video recorder (DVR) to store footage on single hard drive for up to three month.
For better recording quality, get real-time DVR with D1 resolution. Greater number of frames per second is a key to smooth playback without glitches. Real-time recording stores images at 30fps and highest D1 resolution is 704×480 pixels. In real life is enough if the recording speed will be about 15 frames per second. Not real-time systems cost less and since it takes half number of frames the recording time comes longer.
Viewing of video footage can be done directly from the DVR or remotely over the Internet Remote viewing works without zone restrictions; you can watch cameras remotely anywhere in the world. It is also possible to playback and backup information over the network.
When you select security camera it is worth paying attention to the following specifications: Resolution (Low – 380 TV Lines, Medium – 480 TV Lines, High – 700 TVL), Sensitivity (Low – 1 lux, Medium – 0.5 lux, High – 0,002 lux). A microphone will add sound in addition to image capture. Motorized zoom cameras (PTZ) can be controller remotely with ability to point in any direction and zoom enough to recognize license plate from 1000feet distance.