A single heat event is tracked as one alert cycle, from the moment a unit leaves Safe until it returns. Everything about notifying people hangs off that cycle rather than off individual readings — which is what stops the product becoming noise.
The rule, in one sentence: an acknowledgment covers the level it was made at and every level below it, for the rest of that cycle.
- A room crosses into Extreme Caution. You acknowledge. It wobbles between Caution and Extreme Caution for the next two hours — you are not contacted again.
- That same room then crosses into Danger. That is a rise above what you acknowledged, so it does contact you. A worsening situation is exactly the thing you want interrupting you.
- The room cools to Safe. The cycle closes. If it heats up again tomorrow, that is a new cycle and a new acknowledgment.
This is why the product asks for an acknowledgment at all. It is not a receipt for our records — it is the signal that stops the escalation chain and stops the repeats. Ignoring it is what causes the noise people blame on the alerts.
Acknowledging takes one tap from the link in the message; you don't have to sign in.
Read next: What happens when nobody acknowledges →