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					Originally Posted by  Moonliner
					 
				 
				Thanks, but not quite.  That unit plugs in.  I need to be able to walk around without dragging wires. 
			
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 The units (both the transmitter and the receiver) run off of 9V DC (300mA). It wouldn't be too difficult to build your own battery pack for this (although you would need something a little more substantial than a standard 9V battery).