After purchasing a 24"x30"x48" tall cold frame for our unheated sun room (Southeastern PA), I knew that I needed both heat and control. This unit controls two 20"x20" seedling mats to perfection. This unit provides continuous readout of the cold frame temperature and indicates when the mats are powered to provide heat. It takes the guesswork out of temperature control and the orchids love it, which makes my wife very happy.

The part I ordered came quickly I haven’t used it as of yet but looks good there are some other green house items I may look at in the future so send me an email now and then thanks again hope you folks do a great business