Hello, I work for Stelpro and i have been working on getting the Maestro SMT402AD model certified with smart things. I was able to build the Maestro driver into the smartthings app in the beggining of 2024 and had all the features up and running, however around april 6th, all of the sudden, the SMT…

Hello @GustavoAragao It weird to say but glad (somewhat) somebody is having similar issues as me with the SMT402AD01 model. Since my original post here about the Zigee Maestro Thermostat I have not been successful in adding them, despite the fingerprints added to Mariano’s driver. I was about to…

Hello @ellie , I am working on the smartthings integration/certification for 2 Stelpro thermostats (SAT402ZB and SMT402AD01) Here is what i did: I had downloaded the drivers from github (maestro drivers) and populated the files (fingerprints,subdrivers,etc…) with the each thermostat model and man…

Hello again, FYI: I was able just now to pair my other thermostat (the SAT402ZB), so the problem really seems to be with the Stelpro brand specifically, i know that there was a brand migration (for Stelpro) to the a new platform in april that could have affected it, thats my guess. I just sent the …

hello @GustavoAragao Thanks for the details and clarification, your steps and analysis do make sense to me (I come from IT world :slight_smile: So to answer your question, no I have not repaired them since April. I started trying installing my SMT402AD01 Rev09 (yes exact same as yours) in the mont…

Hi @ellie , Just to let you know that, i am submitting a pull request today, despite of the fact that the SMT402AD driver is not onboarding correctly, support asked me to submit it anyways, if there is any issue, the engineering team will deal with it directly from the hub side. I will keep you pos…

Just wondering if there has been any news on this. I am having the same issue and trying to setup 4 of these thermostats under SmartThings but they are still showing up as a Zigbee Thing. Presently have them added to Home Assistant (no issues pairing to that platform) but want to use SmartThings. Th…

Hi Tim, I am currently running into a troubleshooting with the Stelpro Maestro SMT402AD model. We are trying to solve the onboarding issue prior to the smartthings certification. I will keep you posted as soon as we have that driver onboarded succesfully. Regards

Perfect, thank you! That is the exact same model I am using. Let me know if you need any help testing anything.

Hello fellow @Tim_Burke My Stelpro SMT402AD are currently using Mariano’s edge driver available using this link “Zigbee Thermostat MC” Have you tried this custom driver in the interim until they are natively recognized by Smartthings ? Maybe you already have :slight_smile:

Yes, I tried that and unfortunately under SmartThings it only gets recognized as a ‘Zigbee Thing’ even when right beside the hub, and when I try to switch the driver to ‘Zigbee Thermostat MC’ it doesn’t show up as an available option (subscribed and enrolled). I think it’s because for whatever reas…

SmartThings platform Change?

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Itati (SmartThing Developer Support) Split this topic February 10, 2026, 6:35pm 22

A post was split to a new topic: Thermostat not working correctly after Syncing

Topic		Replies	Views
[RELEASE] Stelpro releases its Maestro Line-Voltage Thermostat: The SMT402 Connected Things	59	5792	June 28, 2019
2 Hubs, 2 Thermostats of the Same Model, One Hub Sees it as a Zigbee Thing - Help! Devices & Integrations	18	706	December 19, 2024
Need help to integrate Stelpro SMC402AD (Maestro) Connected Things	1	647	April 23, 2021
Stelpro Maestro SMT402 unable to adjust temperature in SmartThings after Controller v. 2.1.19-7 Devices & Integrations	53	3876	March 30, 2021
Thermostat problems (multiple brands) Nov 2022 General Discussion troubleshooting	33	2978	November 1, 2023

SmartThings platform Change?

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