I just found out Auber now sells the HeaterMeter PID. I think I'll tell them it can be used for electric smokers so they can expand it's listing:
http://www.auberins.com/index.php?main_page=product_info&cPath=14_27&products_id=485
http://smokinitforums.com/index.php?topic=2765
http://www.auberins.com/index.php?main_page=product_info&cPath=14_27&products_id=485
http://smokinitforums.com/index.php?topic=2765