Scene for temperature notification

Good day,

I have a really easy use case. I want a Phone notification to happen when a temperature goes below 16C, and I want the notification to happen until the temp is no longer below 16C.

So I set up a scene with

WHEN: temperature is less than 16 C trigger; repeatedly,

DO: phone notification (alarm), email notification

ACTIVE: all the time and Enabled.

This scene triggers repeatedly all right; for any and all temperature readings. the alarm notification goes off every minute regardless of the temperature which is higher than 16C.

What am I missing? Please help.

B.