Summary of the article:
The first burglar alarm system was invented by Edwin Holmes in 1852. It was a simple device consisting of a power supply, a solenoid gong, and a switch. The switch was attached to the door, and when the door was opened, it completed the circuit and triggered the alarm.
The author provides instructions on how to make your own simple door alarm system using a press switch, a buzzer, and a control switch. The system is easy to make, but it is important to follow the instructions carefully to avoid electrical hazards.
Additional thoughts:
I think that the author's instructions for making a simple door alarm system are clear and easy to follow. However, I would like to add a few additional tips:
- Be sure to use a power supply that is appropriate for the buzzer you choose. Some buzzers require a higher voltage than others.
- Make sure that all of the connections are secure. Loose wires can cause the alarm to malfunction or even cause an electrical fire.
- Test the alarm system regularly to make sure that it is working properly.
It is important to note that a simple door alarm system like the one described in the article is not a professional security system. It can be easily defeated by a determined burglar. However, it can be a good way to deter casual burglars or to alert you to an intruder.
If you are looking for a more sophisticated security system, I recommend that you consult with a professional security company. They can assess your needs and recommend a system that is right for you.
