3 out 1853 ano - Edwin Holmes

Descrição:

A landmark in security tech came in 1853, when Bostonian Augustus Pope patented the first electromagnetic alarm system. Pope's invention set up electrical circuit around doors and windows that triggered an alarm bell if they were opened. Edwin Holmes bought the rights to Pope's invention in 1857 and launched the first electric alarm business.

Reference:
Sherman, F. (2017, September 26). The History of Private Security. Retrieved from https://bizfluent.com/about-5418822-history-private-security.html