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Smart Room Sensor Pack of 3

Smart Room Sensor Pack of 3

$114.17 $120.98

Smart Room Sensor Pack of 3

To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.Learn more how customers reviews work on Amazon







Customers say

Customers find the thermostat sensor works well for managing temperatures across the house and appreciate its ease of setup, with one customer noting it performed well during a Florida heatwave. The product receives positive feedback for its temperature control capabilities, with customers mentioning it starts cooling rooms quickly and helps prevent cold spots on lower floors. Customers like the sensor quality, with one noting it measures both air temperature and humidity, and they appreciate the control features, with one mentioning the ability to prioritize rooms manually. While some customers report compatibility issues with their T9 thermostats, others say it pairs well with T10 models. Customers disagree on the accuracy of temperature readings.

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FunctionalityTemperature controlEase of setupQualitySensor qualityControl featureCompatibilityAccuracy
115 customers mention "Functionality"89 positive26 negative

Customers find that the thermostat sensors work amazingly, effectively managing temperatures across the house, with one customer noting they performed well during a Florida heatwave.

"…Works great and simple to add to the thermostat" Read more
"…Works well." Read more
"Honeywell Home Smart Room Sensor works great! A great way to control the in home comfort for each room in your house or apartment!" Read more
"…The worst sensor runs +6 degrees all the time, which I consider to be defective and useless…." Read more
66 customers mention "Temperature control"50 positive16 negative

Customers appreciate the thermostat's temperature control capabilities, finding it easy to manage and noting that it starts cooling rooms quickly. One customer mentions it helps prevent cold spots on lower floors.

"…Super easy install and started cooling my daughter’s room right away." Read more
"…It paired easily and now maintains the temperature in the occupied room and not just the main room and master bedroom. Works well." Read more
"…These sensors have definitely help create a more consistent temperature throughout my home and always comfortable where I actually am, but it can…" Read more
"…Some reviewers stated that the temperature is not accurate. I have not found that to be the case…." Read more
65 customers mention "Ease of setup"62 positive3 negative

Customers find the room sensor easy to set up and add to their Honeywell T9 system.

"Easy to install; works as expected…." Read more
"…This is a great addition to dial in the temp you want. Very easy to install…." Read more
"The Honeywell Smart Room Sensor was easy to install on the T9 Thermostat. The onscreen instructions were clear and easy to follow…." Read more
"…Easy install, double stick tape. Make sure you follow the directions on how to install. Its very important to not put it near vents or windows…." Read more
36 customers mention "Quality"31 positive5 negative

Customers find the thermostat to be of good quality, with one customer specifically noting it works well as an accessory for the Honeywell T10 thermostat.

"Great product!" Read more
"…Great item. My buddy dose ac install Said this was the brand he used not the t9 thermostat now he's looking to upgrade to this thermostat ." Read more
"…Good product." Read more
"Great Product…" Read more
29 customers mention "Sensor quality"25 positive4 negative

Customers are satisfied with the sensors, noting their placement in every room, with one customer mentioning they measure both temperature and humidity.

"This is very helpful by monitoring the temperatures of each bedroom…." Read more
"Theses sensors measure air temperature and humidity and also have motion detection…." Read more
"…The extra sensor made a big difference in creating a more consistent temperature, especially between floors…." Read more
"…I am enamored with the room sensors. I have a large house with a bonus room above the garage, but only a 1 zone unit…." Read more
22 customers mention "Control feature"18 positive4 negative

Customers appreciate the control features of the thermostat, with one mentioning the ability to prioritize rooms manually, while another notes it can be set in auto mode.

"…month and you can see your average temp on the app and customize or the app is ok not too bad…." Read more
"…This changed everything because now I can set the focus temperature to upstairs to guarantee a comfortable temperature at night." Read more
"…If they do pair, then they are a great addition to having multiple zones/priorities to help balance out multiple areas of your home…." Read more
"The thermostat alone is worth the money. Highly programmable and for the past month has performed very well in the Florida heatwave…." Read more
78 customers mention "Compatibility"46 positive32 negative

Customers have mixed experiences with the thermostat sensor's compatibility: while some report easy pairing with both T9 and T10 Pro models, others mention it's not compatible with their specific T9 thermostat.

"…It paired easily and now maintains the temperature in the occupied room and not just the main room and master bedroom. Works well." Read more
"…Not only were they not compatible I bought them "new" but they were open box AND they could not be factory reset…." Read more
"…Have had no connection issues. My one complaint is only the remote thermostat or the main thermostat can be priority at a time…." Read more
"Update: The compatibility issues are real, but I have to complement Honeywell's service department…." Read more
19 customers mention "Accuracy"11 positive8 negative

Customers have mixed experiences with the thermostat sensor's accuracy, with some finding it very accurate while others report that it does not report the correct temperature and cannot be calibrated.

"…Its been reliable and accurate. Do note that the…" Read more
"…have, the one that works best is off by 3 degrees and there is no way to calibrate…." Read more
"…It's very accurate if 70 was a normal temp for yiur house it may be around 74 now. Great item. My buddy dose ac install…" Read more
"…It's nice to be able to prioritize a room, but it still feels a bit inconsistent…." Read more





Great for creating an good average temp for your house

Amazon Customer
5 out of 5 stars

Great for creating an good average temp for your house
When you use this with the honeywell thermostat t9 it creates an average temp between the 3 when all selected. This also keeps the room your in just right. If your like me and have a warmer side of the house far from the ac this is for you. It also reacts to motion, sense humidity as well. Once you install give it at least a month and you can see your average temp on the app and customize or the app is ok not too bad. It's very accurate if 70 was a normal temp for yiur house it may be around 74 now. Great item. My buddy dose ac install Said this was the brand he used not the t9 thermostat now he's looking to upgrade to this thermostat .
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Top reviews from the United States



  • Daniel M.
    5.0 out of 5 stars

    Easy Install with Immediate Results

    Reviewed in the United States on August 16, 2025

    Item Package Quantity: 1Verified Purchase

    This sensor has calmed my mama heart. My one year old daughter’s room always seemed to be so much hotter than the rest of the house. My A/C guy, and new best friend, recommend this and so far it is working wonders. Super easy install and started cooling my daughter’s room right away.

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  • Paul
    5.0 out of 5 stars

    Honeywell T9 Sensor

    Reviewed in the United States on July 17, 2025

    Item Package Quantity: 1Verified Purchase

    My T9 thermostat came with one sensor that I placed in the master bedroom. Since I spend a lot of time in my home office, I wanted a second sensor to add to the thermostat. It paired easily and now maintains the temperature in the occupied room and not just the main room and master bedroom. Works well.

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    One person found this helpful

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  • secstate
    5.0 out of 5 stars

    Works great easy to install compatible with Mitsubishi MHK2

    Reviewed in the United States on December 7, 2024

    Item Package Quantity: 1Verified Purchase

    I have two ducted Mitsubishi inverter heat pump systems using MHK2 sometimes also known as MRCH2 thermostats. The upstairs system had the thermostat located in a poor location especially in winter. It resulted in the two bedrooms upstairs being about five degrees colder than the set point. I didn't want to put the thermostat intself in a bedroom but I needed to have a temperature sensor in one of them to read the temperature there. I temporarily moved the MHK2 to one of the bedrooms (it is wireless so easy enough to do) and confirmed that reading the temp in one of the bedrooms would get me to where I wanted to be.

    A few Google searches found some reddit threads that confirmed this sensor would work with the MHK2 even though it isn't listed as compatible. I ordered one from Amazon and can confirm it worked great. Download the MHK2 instructions on pairing this and setting it up (it is wireless). You basically need to sync it with the Redlink controller on your unit (which thankfully does NOT unsync the MHK2). Once synced you need to got into the MHK2 setup menu and select using this sensor (you can either use this remote sensor only–what I am doing, or an average of this sensor and the MHK2 sensor).

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    2 people found this helpful

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  • Randall
    5.0 out of 5 stars

    Easy to use with great temp effectiveness

    Reviewed in the United States on August 19, 2025

    Item Package Quantity: 1Verified Purchase

    This is very helpful by monitoring the temperatures of each bedroom. I did have one that kept losing range but once I swapped it out, I haven’t had to change that battery for many months. I use these with my t9 to balance out the house. This is a great addition to dial in the temp you want. Very easy to install. You just put the battery in, check initial range, then move it to the location you want.

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  • KEN E
    4.0 out of 5 stars

    Some sensors not compatible with newer T-9 Honeywell Thermostat

    Reviewed in the United States on July 3, 2025

    Item Package Quantity: 1Verified Purchase

    No fault of the seller but it seems there are some sensors that are not compatible with the newer T-9 thermostats but are still compatible with the T-10 thermostats. I just got of the phone with Honeywell customer support and they told me to return these and orchard purchase thru the Resideo manufacturer website so that I can request to purchase a compatible sensor based on the model number of my T-9 thermostat.

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    One person found this helpful

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  • Ozlem EROL
    1.0 out of 5 stars

    Compatibility Issues – Beware

    Reviewed in the United States on July 10, 2025

    Item Package Quantity: 1Verified Purchase

    This device is actually great when it works. I have two of them connected to my T9 thermostat and they work as intended. The problem is the fact that the manufacturer made changes to the thermostat and/or the sensor since I originally purchased the T9 in 2021, and the extra sensor in 2023.
    There is no way of telling which version you are buying by looking at the product description and the packaging. I called their customer service when I was not able to establish a connection. The rep wanted to start a video call so she could see the labeling on both products. However, their video call system did not work on my phone so I was asked to email pictures of both as well as proof of purchase. I did not understand why they would need the proof of purchase just to tell me if the two devices were compatible. She finally agreed to check compatibility first and then ask for proof of purchase, if needed. It turns out they need it for a possible replacement. I still don't get it as I bought this on Amazon and not from the manufacturer directly.
    I emailed the pictures, was asked for another picture, i.e., the label inside the battery compartment of the sensor which I sent.
    By the way, customer service answered the phone right away so I give them credit for that. The rep needs to improve her listening skills and use her judgement instead of just following the script she is given. For instance, I told her that the reset procedure listed on the company's website (press the connect button for 15 seconds and wait for the orange light) did not work on my device. She could have easily asked me for the number printed after the model number instead of asking for pictures. That would have solved the problem.
    After that I did some research online and realized that this is a known issue: Series 1 of the thermostat is not compatible with series 2 of the sensor so I returned the product. As always Amazon was great with the return request.
    In summary, do not buy this if you bought the T9 couple years ago and would like to add another sensor, like I did. Resideo website has the old version available for purchase so I may buy one.
    In my opinion, it is a poor manufacturing practice to make changes which are not backwards compatible.

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    16 people found this helpful

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  • Desmond Allen
    5.0 out of 5 stars

    Great for creating an good average temp for your house

    Reviewed in the United States on May 23, 2025

    Item Package Quantity: 2Verified Purchase

    When you use this with the honeywell thermostat t9 it creates an average temp between the 3 when all selected. This also keeps the room your in just right. If your like me and have a warmer side of the house far from the ac this is for you. It also reacts to motion, sense humidity as well. Once you install give it at least a month and you can see your average temp on the app and customize or the app is ok not too bad. It's very accurate if 70 was a normal temp for yiur house it may be around 74 now. Great item. My buddy dose ac install
    Said this was the brand he used not the t9 thermostat now he's looking to upgrade to this thermostat .

    Read more

    Customer image


    Desmond Allen

    5.0 out of 5 stars

    Great for creating an good average temp for your house

    Reviewed in the United States on May 23, 2025


    When you use this with the honeywell thermostat t9 it creates an average temp between the 3 when all selected. This also keeps the room your in just right. If your like me and have a warmer side of the house far from the ac this is for you. It also reacts to motion, sense humidity as well. Once you install give it at least a month and you can see your average temp on the app and customize or the app is ok not too bad. It's very accurate if 70 was a normal temp for yiur house it may be around 74 now. Great item. My buddy dose ac install
    Said this was the brand he used not the t9 thermostat now he's looking to upgrade to this thermostat .

    Images in this review

    Customer image


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Top reviews from other countries

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  • Amazon Customer
    5.0 out of 5 stars

    Recommend

    Reviewed in Canada on August 15, 2025

    Item Package Quantity: 2Verified Purchase

    Easy set up and install. Works well with T9 thermostat.

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  • Rodolfo
    5.0 out of 5 stars

    Buen sensor !

    Reviewed in Mexico on July 16, 2023

    Item Package Quantity: 1Verified Purchase

    Muy bueno pues detecta la presencia humana y la temperatura en el área y se complementa perfectamente con el termostato inteligente T8 .

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  • Stacy C.
    5.0 out of 5 stars

    Great for setting temperatures in other rooms

    Reviewed in Canada on July 24, 2024

    Item Package Quantity: 2Verified Purchase

    I bought this because I wanted to make sure my baby’s room was the right temperature. I can also prioritize the thermostat to his room with this sensor, making his room the perfect temperature every time. If you put the sensors in multiple rooms you can even set the thermostat to be based off the average of the two rooms. It’s great! I want one in every room!
    It’s also very easy to install, it comes with the 3M tape and is very sturdy. I haven’t tried removing it yet but I don’t think ill ever have to!

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  • Honest Canuck
    5.0 out of 5 stars

    Using with T9 Thermostat: excellent!

    Reviewed in Canada on June 26, 2024

    Item Package Quantity: 1Verified Purchase

    Our thermostat unfortunately is placed where it gets morning Sun for part of the year, which has always made it think the home was warmer than reality on cold February mornings! So.. enter these remote sensors at C$24/ea. I placed one out of direct sunlight in the main living area, and used the T9 thermostat's touchscreen to set it up and to use it rather than the sensor built-into the thermostat itself. Problem solved, and the sensor is in a better area of the home as well.

    Got a second sensor for the master bedroom area, too. These are easy to install (special double sided foam mounting tape included in the package), and use a dedicated RF link to/from the thermostat rather than WiFi (the thermostat itself also does use WiFi).

    Recommended at C$24/each! I might get more of them..

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  • Deep
    1.0 out of 5 stars

    Feedback and Refund Request for Honeywell Home RCHTSENSOR-1PK Smart Room Sensor

    Reviewed in Canada on January 10, 2025

    Item Package Quantity: 1Verified Purchase

    I am writing to express my dissatisfaction with the Honeywell Home RCHTSENSOR-1PK Smart Room Sensor. Unfortunately, the product has not met expectations and does not function as advertised.

    The sensor only detects motion and fails to recognize occupancy if someone is sitting at a desk working or lying still in the room, such as when sleeping. This limitation significantly reduces its usefulness, as it does not effectively account for actual room occupancy under normal living conditions.

    This crucial detail was not highlighted in the product description, leading to a misleading purchase decision. I believe this omission is unacceptable, as the product cannot deliver the intended value in real-world scenarios.

    I kindly request a refund for this product, as it does not perform as expected and fails to align with the advertised functionality. Please let me know the steps to initiate the return and refund process.

    Thank you for your understanding. I look forward to your prompt response.

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Product Summary: Honeywell Home Smart Room Sensor Pack of 3

From Honeywell Home
Compatible with Honeywell Home T9 and T10 Smart Thermostats.
EXPAND YOUR COMFORT. Smart Room Sensors work with the T9 and T10 Smart Thermostats to sense temperature and humidity from multiple rooms.
WELCOME TO JUST RIGHT. Sense the temperatures in the rooms that matter. Focus on the rooms you choose by setting a schedule.
FOCUS ON THE ROOMS PEOPLE ARE IN. Let the sensors focus on rooms people are in, using motion detection. Stay cozy as you move room to room.
HELP EVERYONE SLEEP COMFORTABLY. Set your T9 or T10 to sense the temperature from the bedrooms at night, to keep those rooms the coolest and help everyone get a cozy night’s sleep.
SIMPLE INSTALL FOR A DIY PROJECT. Smart Room Sensors are easy to set up without any tools required. Use the Resideo app to connect.

Customers say

Customers find the thermostat sensor works well for managing temperatures across the house and appreciate its ease of setup, with one customer noting it performed well during a Florida heatwave. The product receives positive feedback for its temperature control capabilities, with customers mentioning it starts cooling rooms quickly and helps prevent cold spots on lower floors. Customers like the sensor quality, with one noting it measures both air temperature and humidity, and they appreciate the control features, with one mentioning the ability to prioritize rooms manually. While some customers report compatibility issues with their T9 thermostats, others say it pairs well with T10 models. Customers disagree on the accuracy of temperature readings.

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