Do I need to purchase a Glass Break Sensor (PG9922) if the Qolsys IQ Panel 2+ includes a glass break sensor?
That depends on the placement of the main panel and the windows you are looking to secure via glass break sensors. The range of the Glass break on the IQP2+ is about fifteen feet. If seeking to use a glass break on windows outside that range, additional sensors may be required.
Thank you!