Marie Van Brittan Brown invented an early Edition of the modern residence security program in 1966 with the help of her husband, Albert. Easy but very 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 workforce https://vymaps.com/US/The-World-Protection-Group-Inc-VN25283/?id_new=7941f5009f8161e8f314e9838081b666