The 2 am Cold Room Problem: Why Cold Chains Are Moving to IoT Sensors

IoT cold chain temperature monitoring in India

Picture a cold room compressor that trips at 2 am. The temperature rises slowly all night, and by morning the vaccines, insulin or frozen food inside may be damaged while still looking fine. A handwritten log will only show the problem after the harm is done.

Why paper logs leave gaps

  • Readings are taken only 2 or 3 times a day, so nights and weekends go unwatched.
  • There are no live alerts, only records made after the fact.
  • Handwritten logs carry little weight in audits and insurance claims.
  • Nothing is recorded while goods are in transit.

What an IoT setup looks like

Wireless sensors sit in freezers, cold rooms and vehicles. They connect over Wi-Fi, GSM/4G, LoRaWAN or Bluetooth, send readings to a dashboard with live and past data, and raise alerts by SMS, email or app. Pharma distributors, hospitals, diagnostic labs, food processors, cold storage operators and government health departments all have a use for it.

The guide also lists common rollout mistakes, such as alerts reaching people who are not on duty, too many false alarms and no backup during power cuts. It suggests starting with a pilot on the highest-risk equipment before scaling up.

Read the full cold chain monitoring guide here: Spoiled Stock? IoT Cold Chain Monitoring Is the Fix

Published by Affix Center, a Mumbai-based IT services company. Visit affixcenter.com or see our Innovation Lab services.

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