I am using VTM30-SN Smart On/Off Switch + Humidity Sensing with Home Assistant v2026.3.3 and device firmware v1.0.4r3. Here’s my question: I’d like to configure some sort of a “maximum run time” i.e., if someone switches on the load manually with the switch, or the switch is switched on from HA and loses connectivity with HA, the switch should turn off automatically after the “maximum run time” duration has elapsed. Is this doable?
I was playing around with “Advanced Timer” setting but that doesn’t seem to do anything. Any thoughts on how to configure an “off delay timer?”
I don’t know how much parity there is between the different lines of switches (White/Blue/Red), but on the Blue switches (and in the documentation of the upcoming Red On/Off switch), Parameter 12 is the Auto-Off Timer.
Assuming this parameter exists for the White switches, I’m not sure of the best way of going about setting it though. I don’t know if this is available and you are just looking over it? or if it doesn’t even show up for the White switches. If it exists, and there isn’t a way to set it through HA, you might follow the Local Configuration instructions and try to set parameter 12, keeping in mind that you may have to factory reset the switch if this doesn’t work the way you hope.
Parameter 12 is set in increments of seconds, so in line with the instructions linked above, if you wanted to set a 5 minute auto-off timer, you would have to go to that parameter and press up on the paddle 300 times (to set 300 seconds) before saving the value.
I would hope there was an easier way to set this, but this is assuming that this parameter is implemented in the firmware.
I spent a little time trying to access parameter 12. Using quick taps, I only seem to be able to access 7 parameters in the Local Configuration Table, none having to do with the auto off timer.
I believe Endpoint 1 Cluster 0x122ffc31 Attribute 0x122f000c is probably the Auto-Off timer, but in my noobness I’ve been unable to find a way write to it via the HA Matter integration to test it out.
Also, Local Timer mode keeps resetting to disabled after a power outage/airgap. This appears to be a bug.
Thank you everyone. As for automations, while it doesn’t happen frequently, but in those rare cases where HA loses connectivity to the switch, I want the switch to turn itself off regardless of it being connected to HA. Of course, an automation will be useless in a such a situation. Unfortunately, this issue occurred today and am looking for a solution.
That, and the functionality is there, might as well use it.