Each of us wants to feel safe, and especially at home. Modern gadgets allow you to create a reliable system using an intercom. One of its components is the calling panel.
Many people get hung up only on the choice of a video intercom and forget at the same time that the call panels are also different and it is important to choose this element of the system correctly.
In this article, we will talk in detail about the functions, types and characteristics of the gadget and describe how to choose it for your needs and installation location.
Device Description
So, what is a call panel for a video intercom? This gadget consists of:
- metal back cover;
- boards with electronic elements;
- microphone;
- stubs;
- metal case;
- protective glass for video camera;
- protective filter for IR illumination;
- dynamics;
- color lining on the body;
- protective metalvisor;
- installation angle;
- fixing plate;
- metal call button.
As you can see, this small device has a lot of components. This is not surprising, because the call panel performs a number of functions.
The main ones are remote contact with the guest through the instant transmission of audio and video information, as well as the ability to control the lock using a special key.
Scheme and device connection
Despite the large number of components, the calling panel scheme has a rather simple appearance.
Immediately it should be noted that elements such as the power adapter of the lock and the lock itself are shown for clarity and do not belong to the components of the call panel.
As you can see, the call panel is connected thanks to 4 wires, which are marked in different colors and are responsible for sound, video, power.
What wires do you need?
Connection to the monitor is made using a four-wire cable. Often use SSM. This should not cause problems when connecting if the distance between them is up to 50 meters. If more, use a coaxial cable.
The door panel for the video intercom is connected to the lock with a two-core cable of the ShVVP type, the main thing is that the cross section is at least 0.75 mm square. In this case, the power supply will be at a stable level and without interruption, unless, of course, a drop occurs in the network.voltage or shutdown.
Installation Tips
The door panel for a video intercom, like any other equipment, may not bring the expected benefits and may not reveal its potential if it is not installed properly.
Therefore, it is imperative to follow the following advice from professionals:
- Do not mount on doors or other moving structures.
- The level of the device on the wall should be approximately 160 cm from the floor.
- Connect with other equipment only with solid wires, without unnecessary twists.
The expediency of the first advice is that any mechanical impact from a moving door or other elements may adversely affect the operation of the device. Although the door panel housings are mainly made of high-strength metals, constant vibration can cause fragile electronic equipment to malfunction.
Neglecting the second tip can seriously reduce the efficiency of the device. The entry panel for the intercom should be located so that the fullest possible viewing angle of the camera is used.
Safety depends on it
No one standing at the entrance should be able to hide below, on the sides or above the camera's view. Practice shows that for most devices the optimal installation height is 160 cm.
The third piece of advice concerns the integrity of the wires. Certainly,it is quite difficult for beginners to connect all the equipment the first time, and this leads to the fact that they have to re-cut, strip and twist the wires. Moreover, each such connection affects the quality of the transmitted signal due to the possibility of interference and loss.
In order to avoid this, before finally fixing the system, it is necessary to measure everything again and make sure that the work is done correctly: the length of the wires is enough, and there is no excess stock that needs to be cut off. And for connections, it is better to use not just twisting the cores of wires, but soldering, followed by insulation with a tape designed for this purpose.
Choose the right device
In this section, we will look at what you need to pay attention to when choosing and buying a device.
Firstly, the call panel can be designed for indoor installation (that is, indoors) and outdoor. This determines the strength and durability of the device. Exterior panels are more dust-resistant, water-resistant, and often more robust, protecting interiors from vandalism and tampering.
Naturally, this affects the price of the device. Be careful: if you decide to save money and buy a call panel for indoor installation, and at the same time install it outside, it will quickly become unusable. First of all, this will happen due to the harmful effects of the environment, namely weather conditions.
Secondly, the entry panel for the intercom can be either with or without a video camera. This very moment cangreatly affect the cost of the entire device.
Without the camera, the panel is quite cheap and anyone can afford it. But with the presence of video, gadgets become an order of magnitude more expensive, and their cost can vary significantly depending on the characteristics and capabilities of the camera itself: color image, recording quality, focus, viewing angle, IR illumination, etc.
