NEW Open Box Emerson Sensi Smart WI-FI Thermostat ST55 Programmable

Redwetchicken
(5418)
Registered as a business seller
US $69.99
Approximately£53.22
or Best Offer
Condition:
New other (see details)
Breathe easy. Returns accepted.
Postage:
Free USPS Ground Advantage®.
Located in: Utica, Michigan, United States
Delivery:
Estimated between Wed, 5 Nov and Mon, 10 Nov to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the delivery service selected, the seller's delivery history and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Payments:
    Diners Club

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eBay item number:136367012529
Last updated on 25 Oct, 2025 21:39:44 BSTView all revisionsView all revisions

Item specifics

Condition
New other (see details): An item in excellent, new condition with no wear. The item may be missing ...
Country of Origin
Mexico
Power Source
Battery, Corded Electric, Electric
MPN
ST55
Wire Configuration
4-Wire
Year Manufactured
2019
Compatible Product
Universal
Battery Size
AA
Smart Home Compatibility
Amazon Alexa, Apple HomeKit, Google Home/Assistant, Samsung SmartThings, Wink
Control Style
App Control, Digital, Push Button, Remote Control, Touch, Voice
Display Size
5 in (12.7 cm)
Voltage
24 V
Heat Stages
1
Features
App Control, Digital Display, Low Battery Indicator, Touch Screen, Wi-Fi
Protection Properties
AC Protection
Thermostat Programmable Days
7- Day
Compatible Brand
Emerson, Geothermal
Color
White
Compatible Model
ST55
Material
Plastic
Brand
Emerson
Thermostat Shape
Rectangular
Mounting
Wall-Mounted
Voltage Type
Low Voltage
Sensor Technology
Temperature
Number of Periods per Programmable Day
4
System Switching
Auto
Model
ST55
Cool Stages
1
Smart Home Protocol
Wi-Fi
Programmability
Programmable
Category

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.

About this seller

Redwetchicken

99.1% positive Feedback14K items sold

Joined Aug 2016
Registered as a business seller
Welcome to Redwetchicken, your ultimate destination for entertainment and collectibles! Dive into our extensive selection of Movies & TV, where you can find everything from timeless classics to the ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage cost
5.0
Delivery time
5.0
Communication
5.0

Seller Feedback (5,662)

All ratingsselected
Positive
Neutral
Negative
  • 3***7 (385)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    My purchase was as described. Shipped quickly and was purchased at a reasonable price. I should mention the seller was also very fast at responding to questions I had prior to my purchase. Would do business again and would recommend
  • 3***1 (18)- Feedback left by buyer.
    Past year
    Verified purchase
    Smooth transaction, seller quick to ship. Item described as "new" ... the box is pictured. Part of the box was peeled off and UPC had a black mark through it ... which leads me to believe this was a retail returned item. I'm including this information because I believe it would matter to some buyers. Good price. Tested items ... both seem to work with no problems.
  • k***q (249)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    If you are paying attention to the reviews, you'll realize that a ton of them are coming from me. It is bc they are a good company to do business with and I purchased a bunch from them. Now my review: Item was in the condition as described. Packaging was adequate for shipping and delivered timely. Price was reasonable.

Product ratings and reviews

4.2
26 product ratings
  • 18 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
  • 4 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Most 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