When I first plugged in my new EZOSD it was displaying some information overtop of the others. I think it was the firmware upgrade that caused it. But a few bootups later and it went away. It also displayed some odd values but I thought nothing of it after it stopped doing it. Btw, TX plug on the sensor is 5V because that's what the Immersion cam is. Can't use a single battery setup with our cams. Would have been nice if there was a switch that changed between 5V and 12v.