The original implementation of the timer_hold_on service would update all switches on the device (eg it would also turn on Standby). I have added a custom entity feature and applied it to the relevant switch so now only that switch is targeted when using the service on the device.
Note that other switches still appear on the entity dropdown when setting up the service call in the UI, but you get a warning afterwards saying its not supported:
The original implementation of the timer_hold_on service would update all switches on the device (eg it would also turn on Standby). I have added a custom entity feature and applied it to the relevant switch so now only that switch is targeted when using the service on the device.
Note that other switches still appear on the entity dropdown when setting up the service call in the UI, but you get a warning afterwards saying its not supported: