Not to hijack a thread but... any thoughts on a long-range wireless thermometer to monitor the temperature of the pond? I wanted to drop a temperature probe off of my dock and send the temperature to the house which is 300+ feet away. I tried one of these which is supposed to transmit "up to" 330 feet away but it didn't work.
http://www.amazon.com/gp/product/B000EM79VC/ref=oh_details_o00_s00_i01