ISG specializes in designing, installing, monitoring and servicing fire alarms, intrusion alarms, video surveillance and access control systems throughout the Northeast.
Briscoe Protective is the largest privately held security company in the NYC-Metro area and the 20th largest security organization in the United States as ranked on the SDM 100.
ADT will also receive another $150 million for product development from existing investor Google, the Alphabet-owned search engine giant that took a 6% stake in ADT in 2020.