Motion tracking requires some sort of feedback from the camera or motion sensing device to the pan tilt unit (PTU). Typically, a video tracker unit or a camera with built-in tracking and a serial output is used. FLIR`s PTUs are not sensors, and as such, cannot act as a tracker alone. They need to be the slave to a tracking system.
FLIR does sell tracking systems and also integrates trackers into various other pan and tilt systems like Voyager, M-series, M400, MU-series, and other products.