Today, a doorbell is installed in front of the entrance to almost every modern house , the melody of which notifies the owners of the arrival of guests. More than a hundred years have passed since the day of his invention, and since then no family has managed without this necessary accessory. The task of this simple device is to deliver a loud, clearly audible sound when a button is pressed.
How is the electric doorbell arranged and how does it work?
In order to better understand the device of this simplest device, it is necessary to familiarize yourself with its main components. Such a call consists of an element responsible for supplying electricity; buttons springs; Contacts cups Anchors malleus and electromagnet. By the way, it is an electric magnet that is considered the most basic element, due to the presence of which a signal is supplied.
The principle of operation of this device is extremely simple. A wired doorbell is a device that emits a beep when power is applied. In order to close the supply circuit, press the button. It is important that such devices have the ability to spacing elements in different places. The bell button is located outside, on the front door, and he is inside the apartment. The closure and opening of the electric circuit is due to the presence of the same electromagnet.
Main advantages and disadvantages
A standard wired doorbell is a button that opens or closes the buzzer circuit. The indoor unit of such a device is located in the room, and the external - on the front door. To connect these two parts into one, you need a wire, for laying which you need to drill a hole in the wall.
The disadvantages of such devices include the fact that the bell button has contacts that are under high voltage and need additional protection. The installation of such devices is complicated by the need to use thick wires. Despite the fact that such doorbells do not require frequent maintenance and are characterized by a long service life, they gradually lose popularity, giving way to more modern wireless models.
How to choose an electric bell?
In order for the wired doorbell to serve you as long as possible, when choosing it, you must follow a few simple recommendations. You need to buy such devices in specialized stores. An experienced sales assistant will help you figure out the characteristics of a particular model and select the best option.
When choosing a device, you should listen to it. The sound of the doorbell can be standard or in the form of some kind of melody. The volume of the device intended for installation in front of the entrance to the spacious room should be sufficient so that it can be heard from anywhere in the house.
Wired call equipped with electronic shaper
The sound source in such devices is a speaker that has successfully replaced a traditional electromagnet with a bowl. Most modern models work just like this. In order for the speaker to start issuing programmed melodies, vibrations of various frequencies are fed to it. And in this case, you will have the opportunity to independently choose the sound of the doorbell. This may be a quiet buzz or interpretation of popular music.
The button of such a device does not supply power to the call, but only launches the circuit into action. For those who are interested in how much the call costs, we will answer that the prices for wired models range from 300 to 1000 rubles. It all depends on the availability of additional features.
Programmable wired doorbell
These devices have a number of undeniable advantages, including:
- the presence of all kinds of sounds that can replace the usual ringing;
- lack of high voltage on the button;
- the ability to adjust the duration and volume of the call.
You can add the ability to select a specific melody to this list that will be played when a button is pressed. In the simplest models, with each subsequent pressure, a completely new melody will sound. In more modern devices, you can independently set the desired mode (quiet, normal or security). This is done using the button installed on the ringer case.
Self powered device
To date, some models of wired calls can operate on batteries. Such devices can work even in the absence of electricity. The only thing that should not be forgotten is the regular replacement of nutrients. As a rule, one set of batteries lasts for six months of normal call operation. Typically, these stand-alone models are mounted directly on the front door.
Wired calls with touch buttons and voice
Today in stores you can often see improved models, activated by a simple touch of a finger. In such calls there is no mechanical system with contacts. Those who want to know how much a call with a sensor costs should be told that the price of such models differs little from traditional buttons. This is due to the fact that most of them are built on a single transistor with a minimum of strapping.
Devices equipped with voice communication are more like intercoms than a classic call. By clicking on the button of such a device, you can always find out exactly who is standing on the other side of the closed door.
How to install a doorbell?
To do this is much easier than it might seem at first glance. Conventional wired models have two power pins. It is to them that you need to output two wires in order to connect the button and wires from the distribution panel.
At the initial stage, it is necessary to determine the place in which the device itself will be located. To limit the route of laying the wire for the button, it is recommended to set the bell on top or side of the front door. To install wired models, you will need electrical tape, wire cutters, pliers, a thin and indicator screwdriver. To bring the ringing two-wire insulated wire to the outside, you need to drill a hole in the door frame. The outside wire must be connected to the bell buttons. As for the button itself, it should be securely fixed to the wall.
In the event that the battery is located in the device, the second end of the wire must be connected to the two terminals on the battery. If it is located separately, the ring wire extends from the bell to the button. In this case, each pre-cut end of the cable is connected to the terminal.
When connecting a bell to a transformer, first of all, you need to connect it to the junction box, after which you can do the above manipulations. In this case, you need to carefully monitor that the bell terminals are connected to the transformer, giving the appropriate voltage. At the final stage, it is necessary to fix the wires to the terminals located in the bell housing. Before doing this, you should carefully study the manufacturer's instructions. Typically, manufacturers describe the connection algorithm in detail and as accessible as possible.