SIMs for refrigeration and cold chain monitoring.
A freezer that fails overnight costs the stock in it. Monitors with a ThingSIM report temperatures and alarms on their own connection, so a warning gets out even when the site’s network doesn’t.
What the kit needs
Independent of the site
Monitoring that relies on the shop’s Wi-Fi fails along with it. A SIM gives each monitor or gateway its own path out.
Alarms that arrive
Plant rooms and cold stores are hard places for radio. A 4-network SIM uses whichever network reaches in best.
Tiny data, every few minutes
Temperature readings are a few bytes each, so the smallest plan is usually plenty, even for a gateway covering a whole store.
How it connects
Recommended setup
50 MB, UK 4-network, one SIM per monitor or gateway.
Chilled vans are tracking and refrigeration at once; the same plan covers both.
