Marie Van Brittan Brown invented an early Model of the trendy household security method in 1966 with the assistance of her spouse, Albert. Straightforward yet remarkably Innovative for its time, Brown's method built utilization of peepholes, a shut-circuit digital camera program, a two-way microphone, and an emergency alarm. We make https://brandwachen22086.blogsidea.com/33147306/manual-article-review-is-required-for-this-article