Help with Temp Alarm Notifications - Push once every 'x' minutes

Setup, Configuration and Use Beginners
2

Hi,

I would add a DateTime Item, at the point the temperature is below your treshold then update this with the actual date and a Switch item set to ON.

Add a rule in where - e.g. all 5 minutes - you check if the Switch item state is ON, then check if the refresh rate of your notifications is reached (e.g. 15 minutes) and send push, refresh the datetime item.
If the temerature treshold is above then set Switch to OFF.

From here:

var t1 = (SOULISS_TIMESTAMP.state as DateTimeType).calendar.timeInMillis
var DateTime t2 = new DateTime()
var DateTime diff = t2.minus(t1)

Regards