Honeywell Home X2S (RTH2SMC/N)
The Honeywell Home X2S (RTH2SMC/N) is Matter certified (certificate CSA260DHMAT49893-50, certified Feb 3, 2026). It uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller. A certified Matter device can be added to any Matter controller whose app supports its device type, such as Apple Home, Google Home, Alexa, SmartThings or Home Assistant; features vary by app. The maker’s own site names Apple Home, Google Home and Alexa. Sold in the US at Amazon.
Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA260DHMAT49893-50). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Feb 3, 2026 · Connectivity: Wi-Fi · Works with: Apple Home, Amazon Alexa and Google Home · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Apple Home, Amazon Alexa and Google Home (named by the maker)
- CSA certificate
- CSA260DHMAT49893-50, certified Feb 3, 2026
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
- Model number
- RTH2SMC
Updated : the last change to this page’s certification, platform or store facts.
Independent guide. We may earn a commission through affiliate links. Direct non-affiliate links are labeled. How our links work
Amazon
Where to buy
1 store
Check the model, region and pack size at the retailer. Prices and availability are confirmed there.
CSA Matter Certified
Certificate: CSA260DHMAT49893-50Matter 1.3 certificate
Its certificate, CSA260DHMAT49893-50, is for Matter 1.3, certified Feb 3, 2026. The Matter version is the specification version on the certificate's ledger record.
Source: CSA Distributed Compliance Ledger, read Nov 10, 2026.
What Matter 1.3 added, and which devices use it →Consumer-model reference: Honeywell Home X2S RTH2SMC/N, white, for compatible 24 V HVAC. The manufacturer manual explicitly covers base model RTH2SMC and requires a C wire; supports 2.4 or 5 GHz Wi-Fi and excludes 120–240 V electric-baseboard heating. Check the exact equipment configuration and current setup requirements. FocusPRO S200 and RTH2CWF are different variants with their own certificates; this record carries the X2S RTH2SMC certificate (CSA260DHMAT49893-50, February 3, 2026).
Specifications
- Brand
- Resideo
- Category
- Thermostats
- Protocols
- Wi-Fi, Matter
- Certificate ID
- CSA260DHMAT49893-50
- Certified
- Feb 3, 2026
- Model
- RTH2SMC
- Firmware
- 2.0.4.0
Ecosystem compatibility
Quick answers
- Is the Honeywell Home X2S (RTH2SMC/N) Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA260DHMAT49893-50, certified Feb 3, 2026.
- Does the Honeywell Home X2S (RTH2SMC/N) work with Apple Home or HomeKit?
- Yes. The maker’s own site names Apple Home, and it is Matter certified (certificate CSA260DHMAT49893-50). Apple says an iPhone using iOS 18 or later can add Matter accessories to the Home app without a home hub. Apple’s Matter page lists thermostats among the accessory types the Home app supports.
- Does the Honeywell Home X2S (RTH2SMC/N) work with Google Home?
- Yes. The maker’s own site names Google Home, and it is Matter certified (certificate CSA260DHMAT49893-50). Google says you need a Matter-enabled hub device set up on your home wireless network before you can add Matter devices to Google Home. Google’s supported-device-types page lists the Thermostat type.
- Does the Honeywell Home X2S (RTH2SMC/N) work with Alexa?
- Yes. The maker’s own site names Alexa, and it is Matter certified (certificate CSA260DHMAT49893-50). Alexa needs a Matter-compatible Echo; Amazon says its Echo devices support “a subset of Matter 1.5 and lower device types”, so check that yours does.
- Does the Honeywell Home X2S (RTH2SMC/N) work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA260DHMAT49893-50), so any Matter controller whose app supports its device type can add it. The maker hasn’t named SmartThings on a page we hold. SmartThings adds Matter devices through the SmartThings app and a Matter controller.
- Does the Honeywell Home X2S (RTH2SMC/N) work with Home Assistant?
- Likely. It is Matter certified (certificate CSA260DHMAT49893-50), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Home Assistant on a page we hold. Home Assistant says: “Adding a new Matter device only works in the Home Assistant Companion app.”
- Does the Honeywell Home X2S (RTH2SMC/N) use Thread or Wi-Fi?
- Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
- Does the Honeywell Home X2S (RTH2SMC/N) need a hub or a Thread border router?
- No hub of its own and no Thread border router: it joins your Wi-Fi network. You still need your platform’s Matter controller (a smart speaker, display, streaming box or hub), though Apple says an iPhone using iOS 18 or later can add Matter accessories without a home hub.
- When was the Honeywell Home X2S (RTH2SMC/N) Matter certified?
- The CSA certified it on Feb 3, 2026 (certificate CSA260DHMAT49893-50). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy the Honeywell Home X2S (RTH2SMC/N)?
- MatterCatalog has verified store links for it at Amazon. Check the current price, model and pack size at the store.
From this product’s catalog record, not hands-on testing. Editorial policy
Best Matter Smart Thermostats 2026
Compare heating-system fit, regional models and exact retailer options.
Read the full buying guide →
For publishers: link to this certificate
Writing about the Honeywell Home X2S (RTH2SMC/N)? Show your readers where to see its CSA Matter certificate, CSA260DHMAT49893-50, certified Feb 3, 2026. Paste one of these into your page. It is free and optional, with no sign-up. The link goes to this page, which states the certificate and its source.
Text link
Works anywhere HTML works, including a blog post.
<a href="https://mattercatalog.com/product/c17476dddb51f02c">Honeywell Home X2S (RTH2SMC/N): CSA Matter certificate CSA260DHMAT49893-50, see the certificate on MatterCatalog</a>Badge
A small image that links here.
<a href="https://mattercatalog.com/product/c17476dddb51f02c"><img src="https://mattercatalog.com/badges/matter-certificate-badge.v1.svg" alt="Honeywell Home X2S (RTH2SMC/N): CSA Matter certificate CSA260DHMAT49893-50, see the certificate on MatterCatalog" width="220" height="48"></a>Styled badge (script)
The same link, drawn as a badge by one small static file. The link stays in your page without the script.
<a class="mc-cert-badge" href="https://mattercatalog.com/product/c17476dddb51f02c" data-cert="CSA260DHMAT49893-50" data-name="Honeywell Home X2S (RTH2SMC/N)">Honeywell Home X2S (RTH2SMC/N): CSA Matter certificate CSA260DHMAT49893-50, see the certificate on MatterCatalog</a>
<script async src="https://mattercatalog.com/badges/matter-certificate-badge.v1.js"></script>The badge says only that a CSA certificate is on the ledger for this product. It is not an endorsement by MatterCatalog or the CSA, and it does not change how we list or order products. About the badge, and how to remove it.
Stay updated
Get notified when new Matter-certified devices launch.
No spam. Unsubscribe anytime.
Resideo X2S
CSA certified