Just six months after buying Israeli-based video surveillance firm DVTEL for $92 million in cash, FLIR Systems has acquired Innovative Security Designs (ISD), a provider of intelligent systems and IP technologies, in a deal that finalized June 3, 2016. About a year ago, FLIR partnered with ISD on several projects, and the two companies became familiar with each other’s skillsets and plans. Flir purchased ISD from from rival Digital Watchdog for an undisclosed amount.