Give some stream of consciousness and then the answer. Marie Van Brittan Brown (October 30, 1922 -- February 2, 1999) was an African-American inventor, becoming the originator of the home security system (U.S. Patent 3,482,037) in 1966, along with her husband Albert Brown, a patent was granted in 1969. Brown was born in Jamaica, Queens, New York; she died there at the age of 76.

Answer this question: when was the first home security system invented?
This is the relevant information: Marie Van Brittan Brown (October 30, 1922 -- February 2, 1999) was an African-American inventor, becoming the originator of the home security system (U.S. Patent 3,482,037) in 1966, along with her husband Albert Brown, a patent was granted in 1969.
Therefore, the answer is 1966.