Fan Coil Thermostat, Control Line Voltage Valves of a Fan Coil Unit in Cooling, Manual or Automatic Changeover Heating and Cooling Systems, 120-277Vac, 4 Pipe Fan Coil, Automatic Heat-Cool Changeover, 55-95 Degree Temperature Setting Range, Marked Cool-Warm, Differential from Make of One Contact to Make of the Opposite Contact is 7 Degrees Maximum with a Positive Deadspot, Off-Hi-Lo System Switch Position, Off Breaks Cooling and Fan Circuits, Remote Changeover Switch is Required to Seperate Circuits in Manual Changeover Heating-Cooling Models, Tan in Color, Mounting on 4" Square Outlex Box or 2 Ganged Outlet Box, 5-95% RH Non Condensing Operating Humidity Range