Robert the Doll in Key West

Has anyone vistted Robert the Doll in Key West. I have 3 times at night on a ghost tour and we were given EMF Meters to use when we got into the room with him. The meters would all go off at different times in all different places at one time. Question: Can a single spirit do this to many (at least 6) EMF Meters in one room?

I did take a tour during the day, and took my own meter and stood around different parts of the room and spoke with Robert. Did not get any spikes at all from anywhre. I did get a few hits in other parts of the museume and the grounds.

Would be interested in any comments or maybe I was just having and off day.

THanks so much.