No, thermostats are only used for higher output mats...I did not like installing the damn things, they have been nothing but trouble since I have had them, I have had to completely modify my enclosures...almost had URI on my hands, luckily I check daily and was able to fix things when the damned thing malfunctioned and gave my retic a basking spot of 79F. I never had any issues when I just put the damn pad onto the enclosure in proportion to the out put of heat I desired, bu utility bills speak for themselves and a t-stat was necessary. I finally have them all set to what I want and they are holding heat well...but not as good as me by no means. Smaller heat pads are unregulated because the max temp is 96F.