Marie Van Brittan Brown invented an early Variation of the trendy dwelling security procedure in 1966 with the assistance of her partner, Albert. Very simple nonetheless really advanced for its time, Brown's system made utilization of peepholes, a closed-circuit camera system, a two-way microphone, and an crisis alarm. Its team https://www.callupcontact.com/b/businessprofile/The_World_Protection_Group_Inc/8659641