I currently use an Oregon Scientific Temperature alarm(wireless). It's worked fine for my needs with g.h. #1 over the years. For g.h. #2 I need something with a longer range-like at least 150 ft. I'm not finding much that would work. I did find this site http://www.absoluteautomation.com/temperature_alert/index.html and although it's much more expensive than the Oregon Scientific type sensors, I thought it looked pretty cool. Anyone use one? Or have a brand that gets at least a 150 ft. range? I really only need one that reads temperature with a hi/low alarm. Wireless is a must. Humidity read-out would be neat but not necessary.