A frozen zone warming past −15 °C overnight with no one on site
A compressor fault or door left ajar during a late loading run can push a frozen room toward the −12 °C HACCP critical limit in hours.
Solution pack / Magistrala
Cold Storage Monitoring
The Cold Storage Monitoring pack gives food safety managers and facility operators real-time visibility across frozen and chilled zones. Temperature, humidity, CO2, door sensors, and energy meters all feed into pre-built dashboards with eight detection rules and three scheduled reports.
Why Magistrala
All field devices connect to the same Telemetry Channel with per-client MQTT credentials, so a sensor fault on one device does not affect the rest of the monitoring network. One Cold Room Status template scales to any number of customer storage units by device tag without duplicating dashboard configuration.
Explore the platformPlatform dashboards
See it in action.
Purpose-built dashboards for every layer of your cold storage monitoring deployment.
The challenge
Problems cold storage operators deal with every shift
Temperature exceedances, equipment faults, and compliance gaps all have warning signals; the problem is catching them before product is at risk.
Paper logs that are incomplete when the auditor arrives
Manual temperature logs have gaps during nights, weekends, and busy periods. When a food safety regulator asks for 30 days of records, incomplete logs mean failed audits.
A compressor fault discovered after the room has warmed
A refrigeration unit drawing 6,000 W instead of its normal 2,500 W is heading toward failure. Without continuous power draw monitoring, the first sign is often a warm room and spoiled stock.
How it works
From device
to insight.
Four steps from cold room sensor to actionable alarm
- 01
Ingest
Temperature/humidity sensors, CO2 monitors, door sensors, power supply monitor, and energy meters publish SenML readings over MQTT to the Telemetry Channel.
- 02
Detect
Eight rules evaluate every incoming record in real time. Frozen zone above −15 °C fires a Warning; above −12 °C fires Critical. Door open beyond 120 seconds fires a Warning.
- 03
Alert
Alarms appear on the dashboard the moment a threshold is crossed. Email notifications go to configured recipients with the device, measurement, value, and threshold included.
- 04
Report
Daily temperature logs, weekly energy consumption reports, and monthly HACCP compliance summaries run automatically and deliver by email.
Applications
Key Applications
Where the Cold Storage Monitoring pack is deployed today
Frozen and chilled warehouse HACCP compliance
Continuous zone-specific monitoring against HACCP critical limits. Warning alarms fire at −15 °C and +5 °C, giving operators a response window.
Pharmaceutical cold storage
Temperature-sensitive drugs and vaccines monitored against WHO PQS and GDP guidelines. CO2 level monitoring provides additional worker safety coverage.
Refrigeration equipment health monitoring
Compressor power draw tracked against the normal operating range. Energy anomaly warnings fire before mechanical failure forces a room shutdown.
Regulatory compliance reporting
Monthly HACCP compliance summaries with temperature history and exceedance alarm counts per zone, ready for food safety authority submissions.
Benefits
What you get
out of the box.
- HACCP temperature warnings fire at −15 °C and +5 °C, giving operators a response window before critical limits are reached
- CO2 worker safety monitoring enforces OSHA limits: warning at 2,000 ppm and evacuation alarm at 5,000 ppm
- Door open alarms fire at 120 seconds so operators can act before significant thermal ingress affects room temperature
- Grid power failure triggers a Critical alarm immediately; undervoltage below 180 V triggers a second Critical before compressor motors are damaged
- Monthly HACCP compliance reports generate automatically with per-zone temperature history and exceedance alarm counts
- One Cold Room Status template scales to any number of customer storage units with no duplicate dashboard configuration
FAQ
Common questions.
Which temperature sensor types and protocols are supported?
Magistrala natively supports MQTT, HTTP, CoAP, and WebSocket. Sensors using BLE, Zigbee, LoRaWAN, RS-485, or 1-Wire connect via an external protocol adapter that translates readings into SenML payloads.
How does the system handle HACCP threshold breaches?
Zone-specific temperature rules evaluate each incoming record in real time. For the frozen zone, Warning fires at −15 °C and escalates to Critical at −12 °C. Each alarm includes the device, measurement name, current value, and breach threshold.
Can I monitor multiple cold rooms or facilities from one platform?
Yes. The pack ships with two zones but scales to any number. The Cold Room Status template scales automatically by device tag, so new rooms are covered without changing the template definition.
How are the monthly HACCP compliance reports generated?
The Monthly Compliance Report aggregates temperature readings for both cold rooms at daily intervals over the previous 30 days, including average, minimum, and maximum values per zone alongside a count of exceedance alarms.
Your next step
Ready to deploy
Cold Storage Monitoring?
Start free on Magistrala Cloud, or contact us to scope a custom deployment for your organisation.
More solution packs
Other industries.
Smart Water Metering
Most utilities find out about burst pipes from tenant complaints. This pack connects your meters and sensors to a single platform, catches problems in seconds, and files weekly compliance reports automatically.
Smart City
Digitize urban infrastructure and unify civic command centers. Monitor traffic, energy, and public utilities from a single platform.
Smart Energy
Balance loads and monitor renewable generation with sub-millisecond telemetry and automated alerts.