These devices are used to record and display videos and also store the video on a hard disk or external memory flash memory . The types of such devices are numerous depending on the resolution and clarity of the camera connected to them.Recording devices vary to suit the quality of cameras, whether they are high quality, weak or very high, and also vary according to the storage capacity and the number of distribution ports for cameras, including devices with 4 ports up to 64 ports
Network recording device
They are network recording devices that record directly from Network cameras .
Advantages of network recording devices
A large number of network cameras can be connected to it
The system can be monitored from any computer connected to the network
Make the most of the system components because it deals with digital signals
Having a large number of inputs and outputtypes of connecting cables
Coaxial cable:
This type of cable allows video playback on surveillance cameras using and operating a single cable .This type is available in the form of rollers up to 500 or 1000 meters in length.It is considered the best species for use in closed-circuit television. This cable is made of 95 percent braided copper.Which is quite goodsignalling low frequencies .