Reliable way to turn off a switch after being on of 1 hour

[jtlns]

Hi all,

I have a switch (Sonos S26 with Tasmota) integrated with my Home Assistant. The scenario I want to accomplish is that it should be turned off automagically, 1 hour after that it has been turned on. Currently I have achieved this by creating an automation with a state trigger, from “off” to “on”, with a “for” of “01:00:00”. The action of that automation is to activate a scene that turns of the switch.

This works, but I noticed that if I reboot my Home Assistant after the switch has been turned on, the automation is not triggered anymore. So the switch never turns off? Is there a better/more reliable way to turn of my switch?

(maybe related to my scenario: I noticed the sonoff switch displayed the state “off” after the reboot, while it was still “on”)

Thanks again!
Jan

[popboxgun (ha_popbox)]

Check this out, can keep timers over a reboot.

[DEPRECATED] ~~How to make active timers survive a restart~~

NOTE This post is now deprecated and I am no longer supporting its code. It is replaced by a new approach that doesn’t use a python_script and employs script enhancements that were introduced since this post was first created in November 2019. Please refer to the new version presented here:

Deprecated post.

BugFix 1: 2020-06-07 The first automation failed to restore timers whose duration exceeded 24 hours. Durations of 24 hours or more appear in this format: 2 days, 6:30:00 as opposed t…

[jtlns]

Small update: thanks to the “Sync Power State” tip in the Tasmota wiki the state of the plugs is displayed correctly after a reboot of Home Assistant.