Home » AB Controls, LLC AB Controls, LLC December 20, 2005 Reprints No Comments AB Controls, LLC offers information about its new and "hard to find" used HVAC automation system controllers for Robertshaw, Siebe, Invensys, and Barber Colman systems, including sensors, transmitters, transducers, at www.ABControlsUSA.com. Related Articles TAC Americas Inc/Control Solutions Ltd. LLC TAC Americas Inc./Control Solutions Best Bets On The Floor AMCA announces new president, board members You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.