Bests & Worsts Reviews from Amazon

I've used this ThermoCube for a few years to protect some vulnerable water pipes in an otherwise unheated shed. There are several cosmetically-identical versions. The TC-3 model (on this page) is designed to turn on at 35F and off at 45F, which is pretty critical information that should be in the product description. It's rated 15amps and 1800 watts according to [...], which sells these for over [...] each. I've been using this device to switch a radiant oil heater. The new ones will control 250-watt brooder heat lamps. If you're worried about pipes freezing, it's cheap enough and simple enough to be worth a try. It gets 4 stars because the temp sensor is not accurate (on at 38F) and there's no indicator lamp confirming the device is getting power from the outlet.