mmmmm
Well i tried it for a while and using my thermometers i got a totally different reading. I ended up going to the electrical store and buying a dimmer that plugs straight in the wall and now my temps are perfect.
The only prob is i haave no fail safe. my boas are in rubs and using these dimmers ive managed to get 90 for bask and 82 for cool end. 9.99 ....all good but how reliable is this?