What Are The Earliest Alarm Systems?
Security alarm systems have been around for centuries in one form or another. The earliest ones were simple strings ran across doorways with cans or a bell to advise the resident of a violation.
Many persons built steps leading to the home with a burglar step of a different and unexpected measurement every so often in the sequence, this would cause anyone who was not use to going up and down the steps to trip and hopefully make noise.
Farmers and ranchers incorporated certain animals into their security plans. Geese are famous for making noise when someone comes around.I guess that’s a big reason that many cultures employ dogs as house pets these days.
The earliest modern system to the best of my knowledge began simultaneously with the invention of the telegraph system over 120 years ago. American District Telegraph would expect a signal to be sent from banks and other guarded facilities on the 1/2 hour. If the OK signal was not sent on time the Sheriff would be dispatched (also via telegraph) to the site. This early company is still in business and goes by the acronym ADT.
Alarm Systems Today
In more recent years, simple relays were used to design systems that would cause a closing of an electronic circuit if a device opened or closed. The invention of the microchip and the processors they control have changed the industry in ways we could have never imagined just a few years ago.
It really makes you think what a long way we have come with keeping people out of our stuff.
We can now keep an eye on our property using smartphones from anywhere in the world.
