fire detector alarm working model science project

A fire detector alarm is a device that is designed to detect the presence of fire and to alert people to the danger of a fire.

Fire detector alarms can be used in homes, offices, schools, and other buildings to help protect people from the dangers of fire.

Steps to make fire detector alarm

A fire detector can be made using a tubelight starter by following these steps:

  1. Obtain a tubelight starter and remove the plastic cover.
  2. Inside the tubelight starter, there is a bimetallic strip which bends when exposed to heat. Connect one end of the bimetallic strip to a switch.
  3. Connect the other end of the switch to a 9V battery.
  4. Now take a buzzer or alarm, connect one end of it to the positive terminal of the battery and the other end to a resistor.
  5. Connect the other end of the resistor to the negative terminal of the battery and the other end of the bimetallic strip.
  6. When the bimetallic strip is heated, it bends and completes the circuit, causing the alarm to sound.
  7. To test the circuit, you can use a heat gun or a lighter to heat the bimetallic strip. If the circuit is working correctly, the alarm should sound when the bimetallic strip is heated.
fire detector alarm

Video Steps on making fire detector alarm

Leave a Comment