Today in the distribution network you can buy any model of a doorbell for an apartment. This simple essential device is designed to sound an alarm when guests or friends arrive. Its device includes a button and an alarm device. Electric doorbells appeared after the invention of electromagnets, which are the main element of the doorbell. Previously, the bell device was simple and unattractive, but gradually its design became more complicated. As a result, the doorbell has become a convenient modern device.
Varieties and device
Doorbells have a very simple device, but they are made in several types, differing in signal melody, size and shape, as well as quality and cost.
Mechanical doorbells
Often, mechanical bells are used to design and decorate doors in the old style. Outwardly, they can be designed in the form of a hammer, a ship’s bell, etc.
Electromechanical doorbells
The operation of an electromechanical doorbell is as follows. When an electric current is applied to the electromagnet coil, the percussion mechanism is attracted to the core, touches the metal plate, which serves as a sound resonator. As a result, a sound is heard, the volume of which depends on the size of the resonator.
Advantages:
- Long service life.
- Easy installation.
- Simple device.
Electronic doorbells
Connecting electronic calls is practically the same as connecting electromechanical structures, but their internal structure is distinguished by the presence of electronic filling. The sound is heard not from hitting a metal plate, but from a loudspeaker. Such calls are equipped with volume controls and a setting for changing the type of melody.
Electronic doorbells are divided into two types:
Wired
These are ordinary simple calls that operate from pressing a button that closes an electrical circuit. Such doorbells were placed in Soviet times on the doors of all apartments. Today, wired calls have already been redesigned. Various melodies or sounds from popular films are built into it. Such models of calls are the most reliable, they are suitable for many doors.
Advantages: Work in any conditions, reliable and simple design.
Wireless
Such designs are convenient for installation in private homes. The guests who came do not stand near the door of the house, but near the courtyard gate, located at some distance from the house. To install wireless bells, you do not need to run wires from the gate to the house. When the button is pressed, the signal is transmitted via radio waves to the bell located in the house. Different models are able to work at different distances of the button from the main unit, but no more than 100 meters. Wireless calls are made in two versions: on batteries or on accumulators. They do not require a 220-volt household network, so they are installed where there is no electricity, for example, in a forester’s house or a forest hut.
Advantages: Able to function in the absence of a household electrical network, have a sealed housing without the exit of any wires, which prevents the penetration of water. Installation of wireless bells is simple, no wires required.
How to choose doorbells?
- Doorbells should be purchased at specialized outlets for the sale of electrical goods. It is undesirable to make a purchase in a hardware store.
- The cost of the device can vary widely, and depends on the number of functions, overall dimensions, maximum range, external design.
- In large buildings it is necessary to install bells with a louder melody.
- When purchasing, it is necessary to check the type of galvanic cells used. If they are of a non-standard size, then it will be difficult to find the same batteries to replace them later. It is best if the power is supplied from batteries, as they can be charged.
- Ease of installation is an important factor when choosing a device. The simplest fastening is double-sided tape.
- A pleasant-sounding melody also plays an important role, since an unpleasant melody will bother you for a long time. If there are doorbells with different melodies on sale, or with a set of melodies, then it is better to choose the option that is best for you.
- The design of the doorbellhousing should be compatible with the interior of the room. The backlight function of the button will make it possible to quickly find it in the dark on the gate, or on the dark door of the apartment in the stairwell.
- It is best to choose a doorbell model for which a guarantee is given, drawn up by the relevant documents.
- A large selection of models makes it possible to choose a remote or wired bell according to the external design of the room. It can be a small simple case, or an imitation of a bird’s nest. There are also doorbells with the ability to record melodies and sounds.
Conclusion
It is more convenient to use a wireless call in country houses on gates, when it is problematic to lay wires. But at the same time, you should take into account possible obstacles that can weaken the radio signal.
