Sensi Wi-Fi Programmable Thermostat


Sensi Thermostat and App Front Dimensions Scheduling Bigklight
    Sensi Wi-Fi Programmable Thermostat
    DIY Model Number UP500W
    The Sensi™ Wi-Fi Programmable Thermostat is the smart, affordable solution to help manage your personal home comfort. Designed to work with the wires you already have, it's quick and easy to install yoursel​f. This top-rated Wi-Fi thermostat provides complete comfort control. Anytime. Anywhere. To learn more about Sensi thermostat, please visit the dedicated Sensi website at

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    ​​​​​​​​​​​​​​​​​​​ ​​​

    Easy to install. Easier to control. Only from Emerson.
    We’re proud of our customer reviews. See for yourself why the Sensi thermostat consistently receives outstanding reviews for its simple, step-by-step installation, intuitive app design and dedicated customer support seven days a week.

    Click Here to see what you'll love about Sensi thermostat!

    About Sensi
    A DIY project you can really do yourself.
    The Sensi app takes all of the frustration and guesswork out of thermostat installation. Just tell the app which wires are connected to your old thermostat, and it chooses from hundreds of possible configurations to select the one that matches your home exactly. Clearly illustrated, step-by-step instructions will confidently guide you through installation from start to finish. 

    Click Here to watch a video and see for yourself how easy it is to install!

    How to Use

    Program your thermostat
    Program your thermostat with a swipe of the finger.
    The Sensi thermostat is smart enough to know your schedule can’t be learned. So instead of adding expensive sensors that can cause more problems than they solve, we focused on an app that makes scheduling as fast and easy as possible. You can start with a preloaded schedule that reflects common daily patterns and quickly adapt it to your unique schedule, or you can use the intuitive swipe controls to build a customized daily schedule in seconds. When your schedule changes, the app gives you continuous control to make adjustments, from across the room or across the world. Before you pay extra for a 'learning thermostat', take a look at the online reviews…theirs and ours. Our experience makes the difference.

    Sensi Energy Save

    Save more green without turning blue. With features like geofencing, flexible scheduling and remote access, you can save money without compromising your comfort
    You don’t need to choose between saving money or staying comfortable.

    Sensi Accuracy

    Did you know that most thermostats have an 'acceptable range' of plus or minus 3 degrees? With 125 years of residential and commercial HVAC experience. 1 degree precision: Among the tightest tolerance marketed in the industry. It’s time to start expecting more from your thermostat.

    Wink Compatible

    Get even more control over your home comfort.
    Now you can control and customize your Sensi thermostat directly from the Wink app, along with other Wink-compatible smart home products. Connecting your thermostat to Wink is easy. Simply open your Wink app, click 'add a product', then select Sensi thermostat under 'Heating & Cooling' and follow the instructions.


    Our experience makes the difference.
    Emerson has leveraged 75 years of thermostat expertise to bring you a truly modern thermostat solution, complete with the precision control and top functionality we’ve been delivering for decades. You can trust your thermostat to keep your home and family comfortable and safe.

    Smart Features
    ​​Smart Features
    • Remote Temperature Control
    • Multiple Thermostat Control
    • Custom 7 Day Scheduling
    • High / Low Temperature Alerts
    • Local Weather Information
    • Automatic System Configuration
    • Early Start
    • A/C Protection
    • Secure Network
    • Keypad Lockout
    Stat Features Header                                                                                                                          
    Thermostat Features
      • ​Extensive Compatibility
      • 3-Year Limited Warranty
      • Precision Temperature Control +/- 1ºF
      • Low Profile Design
      • Large Backlit Screen
      • Built-In Level for Mounting
      • Auto changeover
      • Fan control 
      • Indoor humidity sensor
      • Back up power (two AA batteries)

    When we set out to design a Wi-Fi solution, compatibility was our top priority. We think you'll agree, a Wi-Fi thermostat that does not require a common wire and uses 2 standard AA batteries is a solution you can install with complete confidence. That’s why we designed the Sensi thermostat to work with the existing wiring on gas, oil, geothermal, heat pump and radiant heat systems – up to 4 stages of heating and 2 stages of cooling. A common wire is only required on 2-wire heat-only or AC-only systems.​

    Compatible Systems:
    • Up to 4 stages of heating and 2 stages of cooling
    • Electric heat and air conditioning
    • Gas, radiant and heat pump
    • Dual-fuel heat pump systems without requiring the installation of additional equipment
    • Geothermal systems - but the Sensi thermostat does not have a built-in humidistat
    • Cool-only or heat-only systems (like hot water systems), but these WILL REQUIRE a "c-wire" (common wire)
    • Systems with remote sensors, although the Sensi thermostat does not utilize additional remote sensors​
    Incomp​atible Systems:
    • Line voltage (2-wire)
    • Proprietary / communicating / serial protocol
    • Old millivolt (mV) wall, in-floor, or gravity furnaces; but can be made compatible with the addition of a 24 volt transformer

    Compatibility Check Tool
    Make sure the Sensi Thermostat will work in your home. 

    A Wi-Fi thermostat that works with the wires you already have.
    The Sensi thermostat works with your home's existing wires and comes pre-programmed with hundreds of possible configurations, most of which do not require a "c-wire".

    In Box
      • Thermostat
      • Free Mobile App
      • Mounting Hardware
      • Installation guide
      • Security Card
      • 2 AA Batteries
    For installation help email or call our friendly and highly trained customer support team:  
       Support 888.605.7131 

    Support Downloads

    Support Videos
    Turning Off Power

    A how-to guide to turning off power to your heating and cooling equipment before you install your new Sensi​™ Wi-Fi Programmable Thermostat. 

    Remove Old Thermostat

    A how-to guide to removing your old thermostat before you install your new Sensi™ Wi-Fi Programmable Thermostat. 

    Furnace Type

    A how-to guide to identifying your furnace type for install of your Sensi™ Wi-Fi Programmable Thermostat.

    Remove Jumper

    A how-to guide for removing a thermostat jumper wire before installing your Sensi™ Wi-Fi Programmable Thermostat. 


    A how-to guide to recycling your old thermostat after you install your new Sensi™ Wi-Fi Programmable Thermostat.

    Wire Picker

    A how-to guide to using the wire picker to help install your Sensi™ Wi-Fi Programmable Thermostat.


    A how-to guide to labeling existing wires to install your Sensi™ Wi-Fi Programmable Thermostat.​

    Removal of existig base

    A how-to guide to removing the existing thermostat base before installing your Sensi™ Wi-Fi Programmable Thermostat

    Install Sensi Base

    A how-to guide to installing the base of your Sensi™ Wi-Fi Programmable Thermostat.

    Connect wire

    A how-to guide to connecting the wires to your Sensi™ Wi-Fi Programmable Thermostat. 

    Creating schedules

    A How-To Guide for programming your Sensi™ Wi-Fi Programmable Thermostat.

    Vacation Schedules
    ​A How-To Guide for setting up multiple schedules on your Sensi™ Wi-Fi Programmable Thermostat.