Review on 12-Foot Easy Heat AHB-112 Cold Weather Valve and Pipe Heating Cable by Paul Vanlaere

That's great. I like them because they don't eat energy. Maybe 3 watts per foot? They are reliable when properly installed. Just don't cover more than once, they will melt. They cannot be repaired once damaged, so prevent them from being eaten by cows etc! The thermometer is the same. I think it turns on at 32, but I've found that if you tie the sensor to one spot on a hose or pipe, make sure it's not the warmest spot on the pipe (depends on how you use it wrap - wrap evenly). Otherwise, the sensor area is 32, and other parts may be below freezing. I've bought 6 of these of various lengths and none have failed (if not damaged) yet and I've been using them for 3 years.