Marie Van Brittan Brown invented an early Model of the fashionable property security process in 1966 with the help of her spouse, Albert. Straightforward nevertheless hugely State-of-the-art for its time, Brown's process designed utilization of peepholes, a closed-circuit digicam procedure, a two-way microphone, and an unexpected emergency alarm. Its team https://www.townplanner.com/directory/247995/