We are monitoring temperatures in our school's freezers and coolers. As it stands, an alert is setup so that if a certain temperature threshold is met, an email/text is sent out to the people needing to know. I'd like the alert to repeat until the temperature returns to within normal range, so basically an email/text every 30 minutes or an hour, something like that. I can't seem to find a way to make that happen. Any tips would be appreciate.