Correspond to DVR stands for digital video recorder, or DVR translated. The DVR in the case of the DVR Cablematic are systems of autonomous video surveillance that can store images from video surveillance chambers then it can be displayed on a PC or a TV because it has several outputs Normally inputs are BNC and outputs varies greatly depending on the model.

Nylon or nylon is a polymer of artificial origin that belongs to the group of polyamides, based on a composition of diamine and diacid chloride.
According to the amount of carbon atoms in the chains of the amine and chloride, it is indicated behind the name, for example, the most common nylon 6.6.

Nylon as it is a very elastic and resistant material is ideal for the textile industry, mainly used foror in the manufacture of stockings in the USA.
Its application was extended until today, where not only do we find nylon in the textile application, but its applications have varied, being able to find this material in utensils, and machinery.

Depending on the need for installation and type of base, trolley or chair, we can find various types of fixation. Among the most common we find:

A - Through hole: It has a hole in which a screw or stem is inserted. It is a very simple installation system. Ideal for wheels that should not support a lot of load.
B - Threaded stem: It has a threaded stem or nut, it is fixed to the surface with a nut. It is usually the most used fastening system.
C - Angular plate: They are usually less used fastening systems, they have lateral plates to fix on the base.
D - Plate: It has a rectangular or square plate on its surface, it includes 4 or more fastening holes to the base, it is one of the most common.
E - Smooth stem: The stem without thread is inserted into the female of the base, we can find it in the typical office chairs with wheels, TV furniture etc ...