Unexplainable Camera movement
This camera was placed in the corner and all cabling was running to the right along the wall. An investigator stoops to check the temperature of a heat pipe on the wall and does not appear to touch the camera. Exactly on minute later, the camera falls over and no visable cable movement is seen.

Questionable orb
We're not sure about this one. It seems to have uniform brightness when it appears from the wall at the right and moves very slowly across the room. Video is 1 frame per second and takes nearly 26 seconds to cross the room. Most other dust was only in the frame for about 5 seconds.

Answer's from the K2 meters
This video shows responses coming from two K2 meters.

Audio system disturbance while investigating.
This video was captured while investigating a hotel in Colorado.