OJS knows Building Automation Systems – BAS. We have been installing and integrating controllers for ten years and OJS Building Services is a Reliable Controls Authorized dealer. Our systems are backward compatible; fully integrating with your older controllers and control types of all kinds (pneumatic, DDC). They are also fully forward compatible (through BACnet) providing you with a sustainable solution backed up by our LEED credentialed employees. We can design a system that will save you money and help lower your overall energy budget.