I am using a Lacrosse Technologies 9007 wireless thermometer. I got it from Amazon for about $20. Is anyone else using this? It seems to lose it's signal all different times of day and in all different types of environmental conditions. It's range says 260' and I have it just over 100' away, separated by only a thermal pane window and a chain link fence. Am I expecting too much? All I want to do is monitor the coop temperature at critical times. Should I have spent more money on a "better" wireless thermometer? If so, what?