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Honeywell Home

Honeywell Home RCHTSENSOR-1PK, Smart Room Sensor works with T9/T10 WIFI Smart Thermostats

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Jan 13
Order within 11 hours and 38 minutes
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Item Package Quantity: 1


Features

  • Compatible with series 3 & Series 4 T9 Smart thermostats. Series number appears after model number on sticker on back of thermostat
  • EXPAND YOUR COMFORT. Smart Room Sensors work with the T9 Smart Thermostat 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 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.
  • CONTROL IT YOUR WAY. Control the T9 and Smart Room Sensors using the Resideo app to control your home anytime, anywhere.
  • MULTI-ROOM FOCUS. Focused on multiple rooms, the T9 will work towards creating an average temperature across the sensors. (T9 sold separately)
  • SENSORS THAT WORK WITH YOUR MOVEMENT. Motion detection that knows the difference between passing through a room or spending time there.

Description

Smart Room Sensor Place Smart Room Sensors where you want to see each room's temperature and humidity. Use the multi-room display on the thermostat's touchscreen or in the app to easily focus on rooms either based on their occupancy or according to a specific schedule you choose.

Brand: Honeywell Home


Model Name: RCHTSENSOR


Product Dimensions: 0.77"D x 2.6"W x 2.6"H


Controller Type: Alexa, Google Assistant, If This Then That, Cortana, Samsung SmartThings, Apple Home


Special Feature: Motion Detector


Brand: ‎Honeywell Home


Model Name: ‎RCHTSENSOR


Product Dimensions: ‎0.77"D x 2.6"W x 2.6"H


Controller Type: ‎Alexa, Google Assistant, If This Then That, Cortana, Samsung SmartThings, Apple Home


Special Feature: ‎Motion Detector


Color: ‎White


Specific Uses For Product: ‎Furnace


Temperature Control Type: ‎Heating and Cooling


Connectivity Technology: ‎Wi-Fi


Included Components: ‎Sensor


Power Source: ‎Air Powered


Item Weight: ‎0.02 Pounds


Voltage: ‎24 Volts


Material: ‎Plastic


Shape: ‎rectangular prism


Display Type: ‎LCD or LED


Control Type: ‎Temperature Control


Control Method: ‎App


Connectivity Protocol: ‎Wi-Fi


Mounting Type: ‎Wall Mounted, Table Top


Style: ‎Pack of 1 Smart Room Sensor


Backlight: ‎Yes


Number of Batteries: ‎2 AAA batteries required. (included)


UPC: ‎085267947077


Global Trade Identification Number: ‎77


Manufacturer: ‎Honeywell Home


Part Number: ‎RCHTSENSOR-1PK/N


Item Weight: ‎0.32 ounces


Item model number: ‎RCHTSENSOR-1PK/N


Batteries: ‎2 AAA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎2.6 inches x 2.6 inches x 0.77 inches


Item Package Quantity: ‎1


Special Features: ‎Motion Detector


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Warranty Description: ‎1 year warranty.


Date First Available: February 15, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jan 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Perfect addition to our new furnace
After our furnace died during the coldest week yet this winter, we had to finally bite the bullet and replace it. The new one is crazy efficient and works so much better than the old one, but that in itself raised a new problem where some rooms are now sweltering while others are lagging slightly behind. Enter this cute like smart sensor. We placed one in the room furthest from the thermostat and within the first day, noticed a big difference and figured we'd add one more for the opposite end of the first floor. We then set the thermostat to average these readings. You can also have it adjust for only when rooms are occupied, or manually override very easily through the interface, but for us the average feature is working best. You can add up to 20 sensors, which I feel would be crazy overkill for our 1800'ish sq/ft first floor, so we'll see how this do over the rest of the winter. Overall very pleased with easy installation in the thermostat interface and if you can attach a command strip, then mounting them in the desired room is a breeze. I'll revisit the review if anything strange comes up. ... show more
Reviewed in the United States on December 19, 2025 by Michael
    • Easy to install . Great product!
Easy to install. I got used once and work perfectly. Ideal to control different temperatures in different rooms at a low cost!
Reviewed in the United States on November 14, 2025 by Etienne Finet
    • Easy Install with Immediate Results
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.
Reviewed in the United States on August 16, 2025 by Daniel M.
    • Compatibility Issues - Beware
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. ... show more
Reviewed in the United States on July 10, 2025 by Ozlem EROL
    • Only work with series 3 or later T9
These do not work with series 1 or 2 earlier T9 models. I tried 2 new ones before I figured out they won't pair. You have to order earlier sensors directly from Honeywell. The series number is located at the end of the model number on the back of the thermostat. The old sensor # ends in 2002. I've ordered from this listing twice before in 2024 and they used to be the old sensor. You will get a red solid light and no pairing when it's the wrong one. ... show more
Reviewed in the United States on November 18, 2025 by Amber W.
    • Surprisingly Effective – Helped Balance the Heat in My Home
I wasn’t expecting a dramatic difference, but this little sensor really helped balance the heating in my home. After replacing our heater, the installer set up a new thermostat and included one remote sensor—but it didn’t quite solve the uneven heating across rooms. I decided to add another sensor myself, and honestly, the improvement was noticeable. The extra sensor made a big difference in creating a more consistent temperature, especially between floors. Now, I’m even considering adding a third one to help regulate the heat in our finished basement. Setup was simple, and it paired easily with our Honeywell thermostat. If you’re dealing with hot and cold spots, this sensor is absolutely worth trying. ... show more
Reviewed in the United States on April 10, 2025 by RAGSystems
    • Accurate and Convenient Temperature Monitoring Review:
This works perfectly! It helps me see the temperature in different rooms, and I can easily adjust the AC to balance the temperatures using the app. Very convenient. I bought five of these and haven’t had any issues.
Reviewed in the United States on October 2, 2025 by Alex

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