- Grasonville, Maryland, United States
- Jun 1st
540-105 Heat Pump Controller, Single Stage, 7.75" L x 4.13" W x 1.5" D Dimensions This Single Stage Heat Pump Controller provides Direct Digital Control of water source heat pumps with ventilation or mixed air control and air to air heat pumps with ventilation and mixed air control. It has a 32 to 122 Degrees Fahrenheit, 10-95%, non-condensing Relative Humidity Operating Environment.