Expire Binding doesn't seem to work

[Tuny (Sebastian)]

The thing is, when your item is updated through the channel the timer will reset. Even when item state does not change.
There are “workarounds” with dummy items. See here:

Using 'expire' as a timer

Beginners with rules often come up against the need for a timer function soon after starting out. The timer features available in the various rules languages are quite powerful, but this frightens new users off. Frequently the use of the ‘expire’ feature built into openHAB3 Items is suggested for basic timing, but this does have limitations. These notes show a way to work around some of the limitations. They are written with old fashioned file-based Item and rule definitions, because it’s ea…