The SAS Supply Air Sensor allows precise real time monitoring of the Supply Air temperature on your Zoned HVAC
system. The SAS wires directly into the BMPlus, NCM300, EWC-300 or UZC series control panels and senses the
supply air temperature in both heating and cooling modes. Using the adjustable potentiometers on the control panel, the
installer can set the desired temperature limit set points on most EWC zoned HVAC systems. This will protect the HVAC
equipment from frozen coils, excessive sweating, or short cycling the furnace/heat pump on high limit or pressure