The critter has been upgraded on the new ones with a new style switch. I researched before I bought mine and everyone seemed to complain about the old switch a ton. I would suggest you just buy a new one and not one from ebay that may contain the old switch. Everyone that complained about the switch, and put in comments about how they bypassed the wiring and made their own switch. I am not the technically savvy, so I just opted for a new one with the new switch. Just FYI...also I love mine, really takes the attn off you and your setup. They seem to be drawn to the motion.