Source 1 THE Series
Source 1 THE Series Features
- Large LCD display
- Easy to operate
- Heat, Off, and Cool modes
- On, Auto fan modes
- Works with Heat Pumps
- Room temperature & set temperature displayed
- Setpoints are never lost in power failure
- Fully electronic for accurate and responsive temperature control
Models: S1-THEC11NS, S1-THEC11P5S, S1-THEH21NS, S1-THEH21P5S, S1-THEU21P7S, S1-THEU22P7S
S1-THEC11NS
The S1-THEC11NS offers basic operation of HVAC equipment at an affordable price. Operating on either 24V system power or 2 AA batteries (included), the S1-THEC11NS is compatible with most equipment including millivolt systems. The front loading compartment makes battery replacements a snap. The separate RC and RH terminals allows easy retrofit on older systems with dual transformers.
- 1-Stage Heat / 1-Stage Cool thermostat
- Works with Heat Pumps, Gas Electrics or Hydronic Heating
- 2, 3, 4 or 5 wires compatible
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- Separate RC and RH terminals
- Battery operated
- Compatible with 24VAC, DC, and millivolt systems
- Battery or system powered
- *Does not control auxiliary heat
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Heat/Off/Cool — Fan On/Fan Auto
S1-THEC11P5S
The S1-THEC11P5S thermostat offers basic operation of HVAC equipment with the ability to run a 5+2 day program at an affordable price. Operating on either 24V system power or 2 AA batteries (included), the S1-THEC11P5S is compatible with most equipment including millivolt systems. The front loading compartment makes battery replacements a snap. The separate RC and RH terminals allows easy retrofit on older systems with dual transformers. The extra large LCD display and the built in LCD backlight aids in readability in low light conditions.
- 5+2 Programmable
- 1-Stage Heat / 1-Stage Cool thermostat
- Works with Heat Pumps, Gas Electrics or Hydronic Heating.
- 2, 3, 4 or 5 wires compatible
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- Separate RC and RH terminals
- Battery operated
- Compatible with 24VAC, DC, and millivolt systems
- Battery or system powered
- *Does not control auxiliary heat
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Heat/Off/Cool — Fan On/Fan Auto
S1-THEH21NS
The S1-THEH21NS thermostat offers basic operation of heat pump equipment at an affordable price. Operating on either 24V system power or 2 AA batteries (included), the S1-THEH21NS is compatible with heat pump equipment. The front loading compartment makes battery replacements a snap.
- 2-Stage Heat / 1-Stage Cool thermostat
- Works with Heat Pumps
- Auxiliary heat control switch and indicator
- Emergency heat mode
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- Battery operated or 24VAC
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Heat/Off/Cool — Fan On/Fan Auto
S1-THEH21P5S
The S1-THEH21P5S thermostat offers basic operation of heat pump equipment with the ability to run a 5+2 day program at an affordable price. Operating on either 24V system power or 2 AA batteries (included), the S1-THEH21P5S is compatible with heat pump equipment. The front loading compartment makes battery replacements a snap. The extra large LCD display and the built in LCD backlight aids in readability in low light conditions. The auxiliary heat control switch allows manual activation of the 2nd stage electric heater.
- 5+2 programmable
- 2-Stage Heat / 1-Stage Cool thermostat
- Works with Heat Pumps
- Auxiliary heat control switch and indicator
- Emergency heat mode
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- Battery operated or 24VAC
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Backlit display
- Heat/Off/Cool — Fan On/Fan Auto
S1-THEU21P7S
The S1-THEU21P7S thermostat offers a great feature set such as 7 day programming at an affordable price. Operating on 24V system power, the S1-THEU21P7S is compatible with gas electric and heat pump equipment and is designed for residential new construction. The extra large LCD display and the built in LCD backlight aids in readability in low light conditions. Instructions for advanced operations are printed on the inside of the door for easy reference.
- 7 day programmable
- 2-Stage Heat / 1-Stage Cool thermostat
- Works with Gas Electric & Heat Pumps
- Auxiliary heat indicator
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- 24V system powered
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Backlit display
- Heat/Off/Cool — Fan On/Fan Auto
S1-THEU22P7S
The S1-THEU22P7S thermostat offers a great feature set such as 7 day programming at an affordable price. Operating on 24V system power, the S1-THEU22P7S is compatible with gas electric or heat pump equipment and is designed for residential new construction. The extra large LCD display and the built in LCD backlight aids in readability in low light conditions. Instructions for advanced operations are printed on the inside of the door for easy reference.
- 7 day programmable
- 2-Stage Heat / 2-Stage Cool thermostat
- Works with Gas Electric, Heat Pumps, and Hydronic heating
- Auxiliary heat indicator
- Setpoints are never lost in power failure
- Fully electronic for accurate, responsive temperature control
- 24V system powered
- Large LCD
- Room temperature & set temperature displayed
- Easy to operate
- Backlit display
- Heat/Off/Cool — Fan On/Fan Auto