Marie Van Brittan Brown invented an early Variation of the trendy home security system in 1966 with the assistance of her partner, Albert. Very simple nonetheless highly Sophisticated for its time, Brown's method produced usage of peepholes, a shut-circuit digital camera method, a two-way microphone, and an emergency alarm. Its https://bizidex.com/en/the-world-protection-group-inc-business-services-348908