Key Features:

• Stages: 3-Heat & 2-Cool
• 3 Configurable Outputs
• Heat pump compatible
• Backlit Digital Display
• Programmable Output
• Filter Change Indicator
• UV Light Indicator
• Drain Pan Overflow Indicator
• Accepts the EZ Programmer accessory
• Accepts the Comfort Call telephone accessory

S1TH19S

Key Features:

• 5+2 day programmable with up to 4 time periods
• 2-stage heat, 1-stage cool for use with gas/electric, heat pump, electric and hydronic
• Works with two "AA" batteries (included) or 24-volt system power
• Large, easy to read backlit display
• Extremely simple to operate and program
• Sleek styling and white color blends beautifully into any decor
• Can be used as programmable or non-programmable
• Service filter indicator
• Low battery indicator
• Energy Star

S1-THEH21P5S Owners Manual

Key Features:

• Non-Programmable
• 1-stage heat, 1-stage cool for use with gas/electric, heat pump*, electric and hydronic
• Works with two "AA" batteries (included) or 24-volt system power
• Large, easy to read display
• Extremely simple to operate
• Sleek styling and white color blends beautifully into any decor
• Setpoints stored in non-volatile memory, and are never lost in power failure
• Low battery indicator

S1-THEC11NS Owners Manual