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Mechanical Thermostats Product Comparison Charts

Specifications & Operational Features PSM400SA PSM30SA PSM40SA
  W W W
Mechanical X X X
Orientation: Horizontal (H), or Vertical (V), or Square(S) H S S
Gas, Oil (Furnace or Boiler) X X X
Electric Forced Air Furnace X X X
Single Stage Heat Pump     X
Millivolt Systems X X X
2 Wire Hydronic Systems (Zone Valves) X X X
3 Wire Hydronic Systems (Zone Valves)      
1 Cool Only X   X
1 Heat Only X X X
1 Heat / 1 Cool X   X


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