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know someone was at the door. Everyone loved the new doorbell, and it
made visits extra exciting.

Components of Doorbell Model

The components of Doorbell model are:

• Buzzer: A buzzer is a small thing that
makes sounds, like beeping or buzzing.

You can find it in toys or alarms. When
you connect it to a battery, it makes noise to get your attention.

• Push Switch: A push switch is like a button that can turn things ON or

OFF. When you push it to ON, things
like lights or fans start working. When

you push it to OFF, they stop.

• Battery: A battery gives power to make things
work, like toys and lights. It has two ends—one

positive (+) and one negative (-)—and they need to
be connected the right way for things to turn on.

• USB Cable: A USB cable is a wire that helps

connect things together, like charging your

tablet or linking a toy to your computer. It lets
electricity move from one thing to another.

• Battery OTG Socket: This is a

special piece that connects the
battery to other parts so they can

get power, like plugging something into the wall to charge it.

• Jumper Wire: Jumper wires are small, colourful wires used to connect

different parts, like linking a battery

to a light, so electricity can move from
one part to another.

Understanding the Circuits 21