Doorbell Wiring Diagram and Connection Procedure


Hi, in this article we are going to learn Doorbell Wiring diagrams. I think you already know what is a doorbell. A doorbell is a notification system to inform or ask a person inside a room from outside. The wiring of a doorbell is a very important part of a house wiring system. almost all house owners want to install doorbells in their houses. So, if you are a house wiring technician, then you must know how to wire a doorbell. Not only household purpose, in fact, hotels, resorts also uses doorbell system.


Different Parts and Components of a Doorbell System


The main parts of a Complete Doorbell System are,
  1. Doorbell Transformer
  2. Push Button switch
  3. Doorbell Chime

Doorbell Transformer


The doorbell transformer is a simple step-down transformer. Its input is 240V AC and output may be 12V AC, or 24V AC, or 6V AC. The output voltage of the transformer depends upon the voltage rating of the chime. The input terminals of the transformer are to be connected to the main power supply(230V AC), and the output is to be connected to the Chime and push button. Anyway, later we will discuss about the connection.


Push Button Switch


Generally, the Chime provides the facilities to connect two push-button switches. But if you connect only one push-button switch then also it will work. In the below wiring diagram, you can see there are two push button switches are connected to the chime. So, one you can connect for your front door, and another you can connect for your back door. These switches work in the principle that when you press the button it will close the circuit from the transformer to the chime, the chime will get power supply from the transformer and it will create sound. Once you remove your hand from the switch, it will disconnect the circuit and the chime will not get sound from the transformer.

Chime


Chime is the device that actually creates sound when anyone presses the switch. It works on the principle of an electromagnet. It basically has an electromagnetic coil and core. When its coil is energized by the external power it makes a movement in such a way that sound is produced.


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Doorbell Wiring Diagram


Here, you can see the wiring diagram of doorbell system. remember that it is the old and outdated electrical doorbell system.

Doorbell Wiring Diagram, Doorbell connection, wire a doorbell, wiring of doorbell, connection of doorbell



Here, you can see there is a total of three-terminal in the chime. The terminal 'T' is for transformer connection. Rest two are for the push button switch. You can see one terminal of the transformer output is directly connected to the chime and another terminal is connected to the push button switches.


Wiring Diagram of New Electronic Doorbell system


Here, you can see modern electronic doorbell wiring and connection diagram.

Electronic Doorbell Wiring Diagram, new doorbell connection



The modern electronic doorbell does not have any transformer or chime. It is a compact device and having electronic circuitry in a single device. It has terminals for connecting the power supply and push-button switch. So, you just need to do a power supply and switch connection. See the above diagram for your reference.


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Doorbell Wiring Diagram and Connection Procedure Doorbell Wiring Diagram and Connection Procedure Reviewed by Author on 10/24/2021 Rating: 5
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