Legacy Controllers
ESS continues to offer support for legacy controllers such as the 981S control module used in the RC900 that has been the controller used with the T500 and T600 series thermal platform systems since about 1997; early MRTP (mechanically refrigerated thermal platform) systems and early SSTC (space simulation thermal chamber) systems. The model 96 was primarily used in the T650 series of thermal platforms until replaced by the new model PM6 in late 2010.