This item is out of stock.

Emerson Sensi ST55 Smart Thermostat White

US $19.95
ApproximatelyAU $30.50
Condition:
Used
Backplate, screws and mount accessories are not included. Otherwise in very good condition and works ... Read moreabout condition
Out of stock6 sold
Postage:
Free Economy Shipping.
Located in: Buffalo Grove, Illinois, United States
Delivery:
Estimated between Thu, 4 Sep and Mon, 8 Sep to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the postage service selected, the seller's postage history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30-day returns. Seller pays for return postage.
Payments:
     Diners Club

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eBay item number:197088152217
Last updated on 16 Aug, 2025 22:47:43 AESTView all revisionsView all revisions

Item specifics

Condition
Used
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitionsopens in a new window or tab
Seller notes
“Backplate, screws and mount accessories are not included. Otherwise in very good condition and ...
UPC
0786710554827
Category

About this product

Product Identifiers

Brand
Emerson
MPN
ST55
UPC
0786710554827
Model
Emerson Sensi
eBay Product ID (ePID)
17033941015

Product Key Features

Power Source
Corded Electric, Battery
Year Manufactured
2019
Battery Size
AA
Compatible Product
Universal
Control Style
Remote Control, Push Button, App Control, Digital, Touch, Voice
Compatible Brand
Oil, electric dual fuel, Geothermal, Gas, Emerson
Color
White
Thermostat Shape
Rectangular
Mounting
Wall-Mounted
Number of Periods per Programmable Day
4
Cool Stages
1
Programmability
Programmable
Wire Configuration
4-Wire
Smart Home Compatibility
Apple HomeKit, Wink, Google Home/Assistant, Amazon Alexa, Samsung SmartThings
Display Size
5 in (12.7 cm)
Voltage
24 V
Heat Stages
1
Features
Built-In WiFi, Bluetooth, Wi-Fi, Remote Control, Low Battery Indicator, Smart Connectivity, App Control, Filter Replacement Indicator, Touch Screen, Adjustable Thermostat, Night Light, Automatic Changeover, Digital Display, Battery Backup, Daylight Savings Time Ready
Thermostat Programmable Days
7- Day
Compatible Model
ST55
Material
Plastic
Sensor Technology
Temperature
Voltage Type
Low Voltage
System Switching
Auto

Dimensions

Item Height
3.75 in
Item Weight
0.55 lb

Item description from the seller

About this seller

NFB store

99.2% positive Feedback47K items sold

Joined May 2015
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage costs
4.9
Postage speed
5.0
Communication
5.0

Seller feedback (10,119)

All ratings
Positive
Neutral
Negative
    • *****- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Perfect seller
    See all feedback

    Product ratings and reviews

    4.3
    23 product ratings
    • 16 users rated this 5 out of 5 stars
    • 3 users rated this 4 out of 5 stars
    • 1 users rated this 3 out of 5 stars
    • 0 users rated this 2 out of 5 stars
    • 3 users rated this 1 out of 5 stars

    Would recommend

    Good value

    Good quality

    Most relevant reviews

    • Top favourable review

      good thermostat but some improvements needed.

      easy to set up and install. user friendly app is provided for the unit. However, some improvements can be made for trend data. My previous wifi thermostats do provide temperature change historical chart. This help me to judge performance of my heating system while I was traveling overseas during winter season. Sensi thermostat only provides temperature reading at the time when I open the app. I have no way to know the readings one hour ago unless I keep watching it.

      Verified purchase: YesCondition: Pre-ownedSold by: relax_and_take_five

    • 3rd Sensi, and would buy again.

      Very good product, without problem. Setup was a little challenging, but their techs helped us get it working on our system. We own 3, at different locations. Would buy a gain.

      Verified purchase: YesCondition: Pre-ownedSold by: goods-f-less

    • I have been using Sensi ST-55s in three ...

      I have been using Sensi ST-55s in three residential places, two states, and with two internet providers. I have had no problems with this item or its installation. It is a quality product, and I am now using it with two wire condensation boilers without a C-wire.

      Verified purchase: YesCondition: NewSold by: house-of-gold

    • Great and smart thermostat will save its users money..

      The Emerson Seni Smart thermostat works well and is easy to program from my smartphone.

      Verified purchase: YesCondition: NewSold by: benjwashi_3729

    • Best Smart Thermostat

      The Sensi Smart Thermostat is the best all-around smart thermostat available. Easy to install and setup. Easy to program schedules. Great intuitive App. Easy to override manually for non- techies.

      Verified purchase: YesCondition: Pre-ownedSold by: alexnew-23

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