I currently have a DP44 switch because I was using 4 satellite locations. But my locals were moved a while back and now I only use 3 satellite locations. So, since I'm only using 3 locations, I would like to change to a switch that does not require power. I'm really getting overloaded on my outlets, so I would like to eliminate the DP44 to free up an outlet. Would a DP34 work for 3 locations? And if so, does it have to be powered?