Marie Van Brittan Brown invented an early Edition of the fashionable residence security technique in 1966 with the assistance of her spouse, Albert. Uncomplicated nonetheless really Innovative for its time, Brown's technique manufactured utilization of peepholes, a closed-circuit digicam process, a two-way microphone, and an unexpected emergency alarm. Its group https://kontactr.com/form-page/f882ffad1bfa115