Description
ST55, The highly-rated Sensi™ thermostat is loaded with features designed to make it easier and more convenient than ever to achieve the perfect level of home comfort. From a simple installation process to an intuitive mobile app that allows you to adjust the settings on your thermostat for complete control – Anytime. Anywhere.
Features
Installs and operates like a standard thermostat when not connected to Wi-Fi
App changes color to show if the system is heating or cooling
Compatible with Apple HomeKit, Amazon Echo and Wink
Geofencing option and smart alerts
Built-in dual fuel heat pump option
Energy Star certified: check out rebates available through your local utility company (utility rebate finder)
Energy Star certified: check out rebates available through your local utility company (utility rebate finder)
Specifications
Energy Star Certified Yes
Program Options Programmable – 7 Day or Non-Programmable
Program Periods Per Day Options 8 Max
Hardwire 20-30 Vac, NEC Class II, 50/60Hz
Battery Power Rating 0 to 30 Vac, 50/60 Hz or DC
Terminals RC, RH, C, W/E, W2, Y, Y2, O/B/2, G, L
3-Wire Zone Valve Connections Yes
Millivolt Compatible No
Economizer Connections No
Humidity Control Displays indoor humidity
Heat Pump Dual Fuel Control Yes (Remote Sensor Not Required)
Heat Pump Auxiliary Lockout Control – Outdoor Sensor Option None
Remote Sensor Options None
Auto Changeover (Heat/Cool) Yes
Fan Option Auto, On
Filter Change Reminder Yes
Early Start Yes
Keypad Lockout Total Lockout
Set-Point Temperature Limits No
Backlight Yes; Continuous Backlight with Common Wire
Voltage 20-30 Vac, NEC Class II, 50/60Hz
Amp Rating 0.05 to 1.5 Amps (load per terminal) 1.5 Amps maximum load (all terminals combined)
Rated Differential, Universal Heat (Conventional Gas, Oil, Electric): 0.5°F (Fast) 0.75°F (Med) 1.9°F (Slow); Cool (Central Air): 0.9°F (Fast) 1.2°F (Med) 1.7°F (Slow); Heat Pump: 0.9°F (Fast) 1.2°F (Med) 1.7°F (Slow); Aux. Heat: 0.5°F (Fast) .
Ambient Operating Temperature 32° to 105°F (0 to 40°C)
Operating Humidity 90% non-condensing maximum
