S1-THEC11NS, S1-THEC11P5S, S1-THEH21NS, S1-THEH21P5S, S1-THEU21P7S, S1-THEU22P7S
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.
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.
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.
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.
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.
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.