In regards to the Qolsys IQ Control Panel, how can I determine if the sensors on my current Monitronics alarm system are compatible with this system. My current control panel is a Honeywell Lynx Plus panel.
A Lynx panel would use Honeywell Sensors (unless it itself is a replacement of a different panel and a translator is already there) so the most likely situation is that you would require a Honeywell to GE translator to use your existing wireless sensors.
Qolsys is GE wireless protocol compatible.