S1-THELOCK
Lockring
THE Series
Are designed for homeowners who want the security of having battery back-up power in addition to the system power in an affordable, easy-to-use thermostat with easy-view display.
Residential Thermostats
Residential Models
- S1-THEH21N-S
- S1-THEH21P5-S
The Source1 THE Series residential thermostats offer maximum features at a minimum
price. They come loaded with the all the features you would expect at an incredibly low
cost. The large and simple to read screen with bold LCD fonts set the Source One THE
thermostats apart from the rest. It's great looks and reliable operation will be enjoyed
for years.
Standard 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
| Feature | S1-THEH21N-S | S1-THEH21P5-S |
|---|---|---|
| 5 + 2 Day Programmable |  |
 |
| Choice of Non-Programmable | |
|
| Stages | 2 Heat, 1 Cool | 2 Heat, 1 Cool |
| Backlight | |
|
| Heat Pump | |
|
| Emergency Heat | |
|
| Aux Heat Lockout | |
|
| Aux Heat Indicator | |
|
| Gas / Electric | |
|
| Millivolt Compatible | |
|
| Battery Powered | |
|
| Extended Battery Life | |
|
| System Powered | |
|
| “Easy Access Battery Door | |
|
| Low Battery Indicator | |
|
| Non-Volatile Memory | |
|
| Terminals in backplate | |
|
| Service Filter Reminder | |
|
| F or C Display | |
|
| Adjustable Dead Band | |
|
| Adjustable Cycles/Hour | |
|
| Calibration | |
|
| Door to Hide Controls | |
|
| Battery Door Logo Program | |
|
S1-THEPLATE
Wallplate
Wallplate
S1-ADDWIRE
Add-A-Wire
Add-A-Wire
S1-THEC11NS
S1-THEC11P5S
S1-THEH21NS
S1-THEH21P5S
S1-THEU21P7S
S1-THEU22P7S
