Hello all Little question: I just bought the REB 1 Soler and Palau fan speed controller for my TD500/150 inline fan. (2 speed) This speed controller seems to simply be a glorified variable resistor designed to control S&P extractors which draw less than 1 amp. The fan is wired in such a fashion as to be switchable between a high speed circuit and a low speed circuit. The guy in the shop said to only apply the controller to the high speed circuit and NOT to the low speed. I tried to question his logic on this but he couldn't give me a good reason other than that is what he'd heard. Since both speed settings of my fan draw less than 1 amp I can see no reason not to apply the controller to the low speed circuit. What do u guys think? Thanks a lot dudes.