Questions? Email us! EMAIL		AB Controls Mission Statement Our mission is to provide the highest quality service at the lowest possible prices. We will not compromise. AB Controls is now providing both new and the "hard to find" used automation system controllers and devices such as sensors, transmitters, transducers, and the antique controllers that have been serving you well. We hope you will appreciate the great prices we are able to pass on to you. Contact us for all your Robertshaw, Siebe, Invensys and Barber Colman system automation HVAC parts and service needs for the ultimate in resources and service.           Back To Top AB Controls USA. Copyright © 2001 AB Controls USA. All rights reserved. Revised: 12/25/03.