You can announce to the owners of the house that they have come to them in different ways: shout, knock or make a phone call. But the easiest way to do this is with a doorbell. Some people believe that the device is not very important, and their choice is not given the necessary attention. But the choice of a doorbell must be approached with skill, for which you first need to familiarize yourself with the existing types of equipment, know the advantages and disadvantages of such devices.
Types of doorbells
More recently, when buying a doorbell, there was not much choice and you could purchase either an electromechanical model or an electronic device with a standard set of melodies. Modern industry does not stand still and this also applies to equipment such as a doorbell.
A modern doorbell not only notifies the hosts about the arrival of guests: this multifunctional device has other useful functions. To decide on the choice of a doorbell, you first need to find out what types of equipment exist, what are their differences, and familiarize yourself with the advantages and disadvantages of different models.
Wired bell
Wired doorbell models are considered the simplest. These devices represent an open electrical circuit. During its closure, such a call makes a sound.
In turn, wired doorbells can be of two types:
Electromechanical
In this case, after pressing the bell button, power is supplied to the electromagnet coil. The core of the coil is connected to the percussion mechanism, which starts to move. There is a blow of a hammer on a metal plate, which creates a sound. Its strength will depend on the size of the resonator.
Electronic
Such calls are similar to electromechanical ones, but differ in internal stuffing. After power is applied, the sound is not created due to the impact of the hammer on the plate, but as a result of the operation of the electronic circuit. This equipment has a set of different melodies, as well as the ability to adjust the sound volume.
Despite the differences in the design of electromechanical and electronic wired bells, they have the following advantages:
- Reliability
- Long service life
- Affordable cost
Among the main disadvantages of wired doorbells, the following should be noted:
- They require connection to the electrical network
- To install such a device, you must invite an electrician or have the appropriate knowledge
- It is necessary to lay wires, and for this it is necessary to drill and ditch the walls.
- Electromechanical models have a uniform signal
Another feature of wired doorbells is that their installation is best planned before finishing work is done or before the door is installed, otherwise damaged walls will have to be restored.
Wireless call
Wireless calls are most often installed in private homes. This is due to the fact that the button is usually located on the entrance gate, and the device that makes the sound is in the house.
By their principle of operation, they are similar to wired electronic models, but after pressing the button, a radio signal is transmitted to the device that makes the sound, which activates the call. Depending on the type of call, the button can be located at different distances, but usually it can be located at a distance of no more than 100 meters.
If we talk about the power of such devices, then it can be powered by batteries or by batteries. There are models in which the button is battery operated, and the main unit is mains powered.
The main advantages of wireless doorbells:
- Can work without being connected to a household power supply
- Have a sealed housing, so they are reliably protected from the negative effects of moisture
- No wires are needed to install them
A high-quality device is tuned to a certain frequency, therefore, when the button is pressed, the alarm block is excluded from the neighbors
Simple installation
Among the shortcomings of this equipment, the following should be noted:
- Limited area of action – the presence of obstacles between the button and the signal block reduces the range of the device
- At low temperatures, batteries and accumulators lose their capacity faster
Video doorbell
Recently, video calls have become very popular. This is due to the presence of such equipment a large number of advantages:
- The device allows not only to see the visitor, but also to talk to him without opening the door
- It is possible not only to conduct remote monitoring, but also to record sound and video
- The video call can work both from a household network and from batteries or accumulators
- The presence of additional functions – remote opening of the lock, video recording, night illumination using infrared diodes, answering machine, the ability to talk with the owner who is outside the home
A modern video call has the following equipment:
- Communication channel, it can be either a special cable or a wireless connection;
- Elements providing autonomous power supply
- Overhead panel, on which there is a call button and a speaker for communication with the owner of the house. Usually, it is executed in a protective case
- Control panel with screen
- In some models, the image can be displayed on a tv or computer
Previously, the body of doorbells was placed in a plastic box, which did not have a very attractive appearance, so that it had to be hidden from prying eyes. Now this equipment has a stylish modern design, so it not only performs its main functions, but is also an element of the hallway decor.
Conclusion
When buying a cheap video call model, you need to remember that it will only perform basic functions, that is, give a sound signal and display an image on the screen. So, choose accordingly.
