Conditional switch off

Hello,

In the script library, there is "Router Watchdog". This is really nice especially when the shelly plus controls something through an automation that requires network connection to close it.

Example: Automation to control an irrigation system through Home Assistant using shelly plus to control the solenoid valve.

The issue i am trying to solve is the following fail scenario:

Automation started and send a command to Shelly to open the valve that it controls. The time that the Shelly as a switch will remain on, is not fixed, and it is related to other sensors of the home assistant implementation. During that time, if the shelly loses network, i want to finish the job and closed itself without the need to get the command from the automation. it is a fail-safe scenario that i think it can be done from the shelly itself. (obviously if there is a power cut-off, the valve closes itself so no need to have a fail-safe there)

Any ideas about the script? is there anyone that can help me out?

Thank you in advance