How to make Door Alarm or Theft alert Alarm working model for science exhibition


In this topic, we are going to show you how to build a Door alarm or theft alarm working model for your science project or exhibitions.

Door alarm or theft alarm working model

A system which is used to detect unauthorized entry, intrusion into a building is called a security alarm.

Benefits of Door Alarms

It is used in various places like industrial, residential, commercial and mainly in military properties to protect against theft or property damage.

It also helps to protect humans against intruders in the house.

Installations of security alarms in residential areas have reduced theft.

Prisons have security systems to control inmates of prison from escaping. Car alarms protect cars against burglary.

It helps to record activities of intruders and can be connected to access control systems for electrically locked doors.

Range of systems can be from noisemakers which are small in nature to more complicated military systems that connected to computer monitoring and control.

Step By Step Making of Door Alarm or Theft alert Alarm working model

In this video, we will show you the following steps by steps of making door alarm from the materials available at home

Materials Used to make door alarm working model

  • Card Board
  • Alarm
  • Pen cap
  • Clothes clip
  • Wire
  • Hot Glue Gun
  • Waste Boxes to get cardboard
  • Scissor to Cut

Questions & Answers on door alarm working model

  1. What is the door alarm?
    Door alarms are designed with sensor and magnet. It helps to alert owners whenever there is an intruder.
  2. What is the purpose of door alarm?
    Purpose of door alarm is to create safe offices and homes against intrusion at access points.
  3. How does a door alarm work?
    Sensors are placed on/inside the doors or windows frame and when the door opens sensor gets activated an alarm rings.
  4. How many types of alarms are there?
    Different types of alarms are building alarm and carbon monoxide detector alarm.
  5. What does a burglar alarm do?
    Burglar alarm sensors help to detect breaking in or whenever an intruder comes into a house or building.


Door alarms help both properties as well as human lives whenever burglars or intruders come in.

With this working model, students understand the concept of door alarm and its implementation for getting ready for the science exhibition

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