Monitronics International was founded in Dallas in 1994 to provide alarm monitoring services to U.S. customers and businesses, as well as financing, technical training and product solutions[clarification needed] to dealers within the industry.

[4] As of 2015, it was the second largest security alarm monitoring company in the United States, behind ADT.

[6] In 2015, Monitronics acquired LiveWatch, a Kansas-based company that sold security alarm and home automation systems for DIY installation.

[7] By 2015, the company had grown to have 180 employees and had around 200,000 customers in the United States, and was acquired by Monitronics for $67 million.

[11] In June 2020, Moni acquired Protect America for $15 million in upfront costs.