Refrigerator and freezer temperature monitoring

A small stainless probe goes into the cabinet, the controller stays outside and reports over cellular. Every fridge and freezer gets its own range, and the moment a reading leaves it an alert goes out. The record lives in the cloud and exports for an inspection in one click, with no log sheet and no morning round with a thermometer.

Talk to us How it works

What goes in the cabinet and what stays out

Probe inside, controller outside. A closed metal door cuts nothing off.

-55 to +125°C
Probe range
±0.3°C
Measurement accuracy
4
Cabinets per controller
Wi-Fi / 4G-LTE
Wi-Fi or cellular, SIM included

The compressor stops at two in the morning

A fridge that fails after closing is found in the morning, when the stock is already unusable. The alert goes out on the first reading that leaves the range, and the reporting interval is yours to set, down to one minute. There is time to move the goods to another fridge before calling the technician.

A defrost is not a fault

Each cabinet gets a range and an allowed excursion duration. An automatic defrost cycle or a door held open for ten minutes stays within the allowed duration and raises no alert. A rise that outlasts it does, and only that one.

Four cabinets on one controller

One Omni Genesis controller on the wall, four probes wired to it: the freezer, the prep fridge and two display fridges. The controller runs on a rechargeable battery and reports over cellular, so it depends neither on a free socket nor on the site's Wi-Fi.

The record replaces the form

Every reading is stored with a timestamp, per cabinet. Before an inspection you export the history to an Excel file and hand it over in place of the log sheets. For anyone still writing by hand, a printable temperature log form.

How refrigerator temperature monitoring is installed

Four steps, no electrician.

  1. 01

    A probe inside the cabinet

    A sealed stainless temperature probe (IP68) goes into the cabinet, and the thin cable passes through the door seal without damaging it. It measures from -55 to +125°C, so the same probe serves the freezer and the fridge. For a cabinet where humidity matters too, such as a ripening fridge, the temperature and humidity sensor fits.

  2. 02

    A controller on the wall, outside the cabinet

    The Omni Genesis controller hangs next to the fridges and takes up to four probes. It runs on a rechargeable battery, connects to a power adapter where a socket exists, and reports over Wi-Fi or 4G-LTE with a SIM included in the subscription. Wi-Fi is an option, not a requirement.

  3. 03

    A range for every fridge

    On the dashboard each probe gets a name, a minimum, a maximum and an allowed excursion duration. Freezer below -18°C, dairy fridge between 0 and 4, display fridge up to 5. The reporting interval is set per controller, from one minute up.

  4. 04

    Alert and record

    A reading outside the range for longer than the allowed duration sends an alert by SMS, email, phone call or push notification to every user on the account. The history of each cabinet is stored in the cloud and exports to Excel for an inspection.

For record-keeping requirements and storage temperatures by food type, see the guide to temperature monitoring for food safety and HACCP.

Wireless temperature monitoring that does not lean on the site's Wi-Fi

Many wireless temperature monitoring systems ride on the site's router. When it is rebooted, fails or gets replaced, monitoring disappears with it, and on the exact night it happens nobody notices. The Agrinovo controller reports over the cellular network with a SIM included in the cloud subscription, and runs on a rechargeable battery. A power outage in the kitchen stops neither the measurement, nor the record, nor the alerts.

The only wired part is the probe itself, from the cabinet to the controller on the wall beside it. A wired connection inside a closed metal cabinet is more reliable than any transmitter trying to broadcast through a freezer door.

Where it is installed

Same probes, same controller, different ranges.

Restaurants and cafes

Freezer, prep fridge and dairy fridge on one controller. An automatic record in place of the log sheet taped to the fridge.

Supermarkets and grocers

Open display fridges and display freezers, where an open door and lighting move the temperature through the day. The history shows when.

Institutional kitchens and catering

Care homes, nurseries and schools, where the inspector asks for a record per fridge. Export to Excel by period.

Chains with several sites

All sites in one account, each site a separate location on the dashboard, and view or edit permissions per user, per screen.

Technical specifications

Temperature probe, range-55 to +125°C
Temperature probe, accuracy±0.5°C (-10 to +85°C)
Temperature probe, sealing and cableStainless steel IP68, 1-3 m cable
Temperature and humidity sensor, temperature and humidity-40 to +80°C, ±0.3°C; 0-100% RH, ±3% RH
Controller ports4 (Omni Genesis), 1 (Genesis Lite)
ConnectivityWi-Fi / 4G-LTE (SIM included), Bluetooth
PowerRechargeable battery, 6-32V DC input
Reporting intervalYour choice, from one minute up
ExportExcel, per cabinet and per period
Warranty24 months on the controller, 12 months on sensors

Questions about refrigerator temperature monitoring

How many refrigerators and freezers does one controller cover?
The Omni Genesis controller has four ports, and each temperature probe takes one. So one controller covers up to four cabinets within cable reach of each other, for example a freezer, a prep fridge and two display fridges in the same kitchen. A larger kitchen or a site with more cabinets adds a second controller, and all of them report into the same account on the dashboard.

Does the site need Wi-Fi?
No. The controller reports over the cellular network with a SIM included in the cloud subscription, so monitoring does not depend on the site network and does not drop when the router is rebooted. Where a stable Wi-Fi network exists it can be used instead.

What happens during the freezer's automatic defrost?
Each sensor gets not only a range but an allowed excursion duration. An automatic defrost that lifts the temperature for a few minutes stays within the allowed duration and raises no alert. A compressor that stops and causes a rise that outlasts it does.

What happens in a power outage?
The controller runs on a rechargeable battery and reports over cellular, so it keeps measuring, logging and sending alerts when the kitchen loses power. If a fridge starts warming, the alert arrives in time to move the stock.

What does the record look like at an inspection?
Every reading is stored with a timestamp, per cabinet. Before an inspection you export the history for the requested period to an Excel file and present it in place of the paper log sheets. The printable temperature log form remains available for anyone still logging by hand.

Talk to us about your fridges

Tell us how many refrigerators and freezers the site has and where they stand, and we will scope the system with you.

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Know what is happening in the fridge before you open it

A temperature per cabinet, an alert on excursion, and a record that is ready for inspection.

Request a quote All temperature monitoring systems

Technical capabilities

The facts an integration plan needs. Full measurement range and accuracy specifications are on every product page and datasheet.

Sensor protocols

  • RS-485 Modbus RTU
  • SDI-12
  • I2C
  • Analog
  • 1-Wire

Connectivity

  • 4G LTE cellular (optional)
  • Wi-Fi
  • Bluetooth

Power and enclosure

  • Solar powered
  • Battery operated, deep-sleep cycle
  • IP65 rated controllers

Data and integration

  • Cloud dashboard with real-time alerts
  • Configurable reporting intervals
  • REST API access
View full specifications in the product catalog