Know the temperature everywhere, all the time.

Paper logs filled in twice a day cannot catch a door left open overnight. Wireless sensors record temperature, and where needed humidity and door status, every few minutes and send it to a central system that never sleeps.

When a reading leaves its limits the right person is told by app, SMS or call, with escalation if nobody responds. Every reading is kept, so audit reports and excursion investigations take minutes instead of days.