PJ if I am not mistaken, I posted awhile back about the differences between the k type and rtd and I think you are the one that talked me into the rtd sensors. After reading more about them, I don't think I would be happy with the thermocouples. That's why I went with all auber equipment. You speak very highly of them in all of your posts ( and I have seen you disclaimer about not gaining anything from them, they're just that good) and I along with countless others respect your opinion and know you wouldn't steer anyone in the wrong direction. Thank you again for all of your help. With a little luck, maybe my spa panel will be here tomorrow and I can finish wiring this thing and fire it up this weekend, but I'm sure I'll have questions upon questions from here to there! Thanks again PJ.