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About this product
Product Identifiers
BrandEmerson
MPNST55
GTIN7445017991911, 0696551318901
UPC7445017991911, 0696551318901
ModelSensi ST55
eBay Product ID (ePID)20038143883
Product Key Features
Power SourceCorded Electric, Battery
Battery SizeAA
Compatible ProductUniversal
Control StyleRemote Control, Push Button, App Control, Digital, Touch, Voice
Compatible BrandEmerson
ColorWhite
Thermostat ShapeRectangular
MountingWall-Mounted
Number of Periods per Programmable Day4
Cool Stages1
ProgrammabilityProgrammable
Smart Home CompatibilityApple HomeKit, Wink, Google Home/Assistant, Amazon Alexa, Samsung SmartThings
Voltage24 V
Heat Stages1
FeaturesDigital Display, Wi-Fi
Protection PropertiesAC Protection
Thermostat Programmable Days7- Day
Compatible ModelST55
MaterialPlastic
Sensor TechnologyTemperature, Humidity
Voltage TypeLow Voltage
System SwitchingAuto
Smart Home ProtocolWi-Fi
Additional Product Features
Items IncludedMounting Hardware
Energy StarCompliant
Manufacturer ColorWhite
Ratings and reviews
Most relevant reviews
- 13 Nov, 2019Most favourable review
Smart and simple
Programmable thermostats have been around for many years but so many people never took advantage of them due to frustration setting up schedules at the thermostat. The "c-wire" or lack of one deterred some people from upgrading to a easier to use smart thermostat. The Sensi addresses both of those issues and makes setup and install a breeze. I love the ability to have so many programming schedules throughout the day unlike older programmable thermostats which limited you as to how many adjustments you could schedule it to automatically make each day. This thermostat is fantastic when you have different work schedules and sleep times for multiple people in your household. The geofencing is a great feature, smart alerts which notify you of extreme changes and the ability to check and set your thermostat from anywhere mean you always know the real time conditions and can make adjustments when you are away from home. Just enough features to make this purchase a no brainer for people who want more control over current climate conditions within their homes whether they are away or still in bed calling out to their smart assistant to make the house warmer before they hit the cold bathroom tile floor. Consistently rated a best buy by many tech publications for good reasons.Verified purchase: YesCondition: Pre-owned
- 14 Feb, 2018Most critical review
Good, but not great.
My main concern is that no historical temperature or settings data is available, so one cannot learn the history of the device use over time. This is a major flaw in my opinion. By comparison, BayWeb thermostats log a huge amount of data, and plot it for you upon request. Much better would be a user interface that allowed you to monitor outside temperature, inside temperature, heat demand use, amount of sunshine daily, humidity values, etc. This could all be done easily and inexpensively in the cloud, and it should be! It is not like Sensi doesn't collect all that data anyway!Verified purchase: YesCondition: New
- 07 Feb, 2019
Great Wifi Thermostat and Easy to use.
Great product so easy to install. I did have to run an external 24vac transformer as i have an old 2 wire heat only thermostat. ( You can purchase one online from amazon). it was an easy install just about 10-15 minutes to take off the old reconnect wires, remount. The set up was easy as well with the downloading of an app ( that walks you through the installation) it also walks you through the wifi set up. Now Just add it to Google Home and you can just tell google to set thermostat for what ever temp you would like. Setting up scheduled times for different heat settings for when you're aware is also very simple.Verified purchase: YesCondition: New
- 15 Jun, 2020
Good Stat
It’s very easy to install, an 7th grader could do it. It has what I need, some others want the learning type, not me. I would have given it 5 stars if you could adjust the set point for low temps. It has a hard set point of notification @ 45 degrees. I live in MN, I need to know sooner if an issue arises. For you southerners, a house in MN, in Jan or Feb could freeze all pipes to bursting in 24 hours if cold enough outside.Verified purchase: YesCondition: New
- 11 Dec, 2019
Value and Performance
This is my second Sensi ST55. Now have one in each of our two houses. Love the way I can access the temp and humidity via the internet and I get automatic alerts by email if the temp or humidity fall out of the range I've set them at. As far as value, this unit is all I need. Control it with my smart phone from across the country or around the world, and at 1/2 the cost of competing thermostats. I love it!Verified purchase: YesCondition: New
- 19 Oct, 2019
I am very happy with my new thermostat
This is a great thermostat. It being smart is a huge plus. Installation was very easy and clear with the video provided. Having the app at my convenience is an awesome upgrade. Plus whatever you spend on it, you get a ComEd rebate check back. So it's a free up to date device for your home.Verified purchase: YesCondition: New
- 25 Jan, 2023
QUick & easy install - works great
Easy to install. The wiring directions are clear. The App is well done and leads you step by step to connect and setup the thermostat. Thankfully, the Thermostat itself has a clean and simple interface. Too many thermostats have complicated the interface for what is a simple device.Verified purchase: YesCondition: New
- 04 Apr, 2019
Great Product and Easy install
My second Sensi. I already have a Sensi for my downstairs unit, and now I have installed this for my separate upstairs HVAC system. Both are controlled by voice with my Echo, and now I can check on and control both with my smartphone while we are away on trips. I had some questions about wiring when I was hooking it up, but all I had to do was call the 800 number and the technician talked me through it after I emailed a pic of the wiring to him- instant help!Verified purchase: YesCondition: New
- 04 Sep, 2019
Well worth it!
This is a wonderful product and at an excellent price (especially since I get a $50 rebate from my utility company!). I could have paid twice the price for more bells and whistles, but I did not need a thermostat that can analyze my usage, a remote sensor for a distant room, or a smart sensor to know when I am home. I bought this so I can control my AC and heater with my phone so I don't have to go downstairs and I can also control it when I am not at home. The only downside is that when I open my app, it often says that I am not connected, but that clears up within a minute or so. I've never had to wait long. I don't mind that, as I do not need 24/7 communication with my thermostat. The big numbers are easy to read with my set of old eyes. Install was smooth and easy. My only hitch was I did not see when to install the batteries, so I was not able to connect the thermostat to my wifi until I installed them. No biggie.Verified purchase: YesCondition: New
- 28 Feb, 2019
Good product
Installation was very easy and straightforward. So far there are no connection issues and I do not have a C wire on my system. Keeps a good even temperature. Phone app is easy to use..Verified purchase: YesCondition: New
