Solutions
Four places the cold chain breaks.
The failure is rarely the freezer itself. It is the handoff, the overnight gap, and the hour nobody was watching.
Refrigerated transport
Set-point deviation, door events and power interruption logged for the whole run. A load that arrives warm has a timeline attached showing when it happened and how long it lasted — which is the difference between a claim you can settle and an argument you cannot.
Cold storage and warehousing
Multi-zone coverage for walk-ins, freezers and controlled-ambient areas. Monitoring points placed where a temperature mapping exercise showed the warmest and coldest corners, not where the cabling was easiest.
Restaurants and food service
Reach-ins, prep fridges and walk-ins on one view, with overnight alerting. Most spoilage discovered at opening began at some point the night before, and the recorded history says exactly when.
Pharmaceutical distribution
Continuous monitoring against mapped storage profiles, with excursion records and documented response — the evidence a Good Distribution Practice programme is expected to produce on request.
What a deployment involves
Map the zones
Identify what is stored where, the limits that apply, and the points most likely to drift first.
Place the sensors
Wireless sensors at the mapped points, reporting to a gateway. No cabling through cold rooms.
Set thresholds and routing
Alert limits per zone, and a decision about who is woken up at 2 a.m. and by what method.