Roberts-Gordon has announced the introduction of its patent-pending Building Zone Controllers (BZC). These micro-processor-based controllers have the programming ability to select which Roberts-Gordon products are in each control zone from Corayvac to Gordonray BH. The BZC 100 controls one zone, the BZC 300 controls three zones and the BZC 700 controls seven zones. The controller must be initially programmed with the building's heat requirements. With "self-learning" optimization, the controller then automatically adjusts "on" and "off" to activate at the right time. www.rg-inc.comRoberts-Gordon.