Use cases · Cold chain

Cold chain, from the cold room to the customer's door.

One record for the whole trip: the room it was stored in, the dock it left from, the truck it rode in and the stop where it was delivered. When any of them drifts, the right person hears while there is still time to act.

Readings on this page are sample data.

The operation

Four places a load can warm up.

Each stage has its device and its own limits, and all four write to the same record.

  1. Freezer doors along a cold-store corridor at night, an amber warning light over the loading door.

    Cold room and warehouse

    Sense + Link Indoor

    Temperature, humidity and the door, against each room's own range.

  2. A refrigerated trailer backed onto a loading bay, bins loaded inside.

    Loading dock

    Sense

    How long each door stays open while a truck is loaded.

  3. Trucks and vans on a motorway, seen from above.

    Reefer truck

    Sense + Link

    The load's temperature, the doors and the truck's position between stops.

  4. Street map of Van 07's delivery route through Irving and Grand Prairie, Texas.

    Delivered

    Live link

    Arrival at each stop, and the temperature record for the customer.

Part of Controlled environments Runs on Monitoring & tracking, Alerts & incidents, Fleet & routes and Dashboards & twins

A cold room drifts overnight

Each room is read against its own range, and a reading has to stay out for the time you set before it alerts, so a door opened for a pallet isn't an alarm, but Chamber 4's door left open at 5:54 AM is.

OnSense+Link Indoor

Chamber 4This morning
4634°F5:40 AM6:00 AM6:12 AM6:30 AM6:52 AM41°F (5°C) limitDoor left open · 5:54 AM4634°F5:40 AM6:00 AM6:12 AM6:30 AM6:52 AM41°F (5°C) limitDoor left open · 5:54 AM
  • Above 41°F5:57 AM–6:49 AM

The alarm reaches someone who can act

Incident #4821 opens at 6:12 AM and reaches the person on call by SMS and push. If no one acknowledges, the site lead hears ten minutes later, and each step is on the record.

How escalation works: Alerts & incidents →
Escalation chainCold storage · nights
  1. On callSMS and push, with an acknowledge link
  2. Site leadIf no one has answered
  3. Operations managerIf still no answer

A load arrives warm

A Sense tag rides with the load and a Link in the cab reports it with the truck's position, so doors left open at a stop show while the driver can still close them.

OnSense+Link

Trailer 22 · tripTemperature
4634°F11:20 AM12:00 PM12:40 PM41°F (5°C) limit4634°F11:20 AM12:00 PM12:40 PM41°F (5°C) limit
  • Peak42.8°F · doors open at stop 3
  • Back under 41°F12:40 PM

The customer asks where it is

Each stop is logged as the truck arrives, and your customer follows the delivery on a live link that expires on its own, instead of calling dispatch.

OnFMC003orFMC650

Route · Tuesday deliveriesVan 07 · 6 stops
Street map of Irving and Grand Prairie, Texas: Van 07's delivery route on real roads, three stops done, the van between stops 3 and 4 on its way to stop 4.Street map of Irving and Grand Prairie, Texas: Van 07's delivery route on real roads, three stops done, the van between stops 3 and 4 on its way to stop 4.Map OpenFreeMap · © OpenStreetMap contributors
Stop 4 · Cedar MarketDelivery window 11:00 AM–11:30 AM
  • Van 07Next stop · ETA 11:20 AM
3 of 6stops done29 mitoday2:10 PMback at depot

The auditor asks for the record

Every room keeps its readings and every excursion its range, duration and who answered, rolled up to the facility and exported for your food-safety plan or your customer.

Report · North depotAugust
  • Cold rooms12 of 12 reported
  • Data gapCh. 6 · 25 min, Aug 14
  • Rolled up toNorth depot facility
  • DeliveryCSV · emailed on the 1st

Generated by OneIoT · Sep 1, 6:00 AM · page 1 of 1

Next report · Oct 1 · by email

What goes in

What goes in at each site.

  • A sensor in each room

    It reads the temperature and the door. Freezers get the cold-rated version.

  • A gateway on the wall

    On your Wi-Fi or Ethernet. In each reefer, one with its own SIM.

  • Set up with you

    Each room's range, how long a door may stay open, and who hears first.

Where it stands

The engine is proven. Your cold chain is next.

  • 500+acres of greenhouses

    A greenhouse-controls maker

    Its next-generation controller runs on our edge and cloud: control on site over Modbus, remote access and updates — at four of its customers' sites.

  • 200K+active devices

    Across the platform

    Platform figures as of 31 Aug 2026.

  • First sites now

    Your cold chain

    We set up the rooms, the dock and a truck with your first site.

Questions

Before you ask.

Something we haven't answered? Ask it on the call, or write to [email protected]

Does it work in freezers?

Yes, with the extended-range Sense, down to -40°F (-40°C). Teltonika's EYE Sensor stops at -4°F (-20°C), so it is for chilled loads only.

Do our trucks need new trackers?

Not for the load itself: a Sense tag and a Link in the cab report on our SIM. Reading the reefer unit, or a tracker you already have, is integration work we scope with you.

Who hears first at night?

The person on call for that site, by SMS and push. If no one acknowledges, the next person on the chain hears.

°F or °C?

Both. Each user picks; the record keeps the reading as it arrived.

Where to start

Start with one site, and the devices it needs.

  1. Call

    A thirty-minute callYour sites or fleet, what goes wrong today, and who answers.
  2. Outline

    A written outline and a fixed priceWhat we connect, what you already have that stays, the first-site fee.
  3. 4 weeks

    Four weeks on your first siteWe connect it, set it up and run it.
  4. Results

    Your results, on recordWhat it recorded, what it caught, and how fast each one was answered.

Start with one site: 4 weeks at a fixed fee. Then a monthly price per site or per tracked device, on a 12-month term.

Prove it on one site in 4 weeks

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Make cold rooms, reefer units or chillers? Sell this under your brand. Tell us what you make

Prove it on one site in 4 weeks

Tell us about your sites. We reply to set up a thirty-minute call, then send a written outline with a fixed price.

  1. A thirty-minute callYour sites or fleet, what goes wrong today, and who answers.
  2. A written outline and a fixed priceWhat we connect, what you already have that stays, the first-site fee.
  3. Four weeks on your first siteWe connect it, set it up and run it.
  4. Your results, on recordWhat it recorded, what it caught, and how fast each one was answered.
Prefer to talk now?
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Book the scoping call.

Thirty minutes with a sales engineer, on what you run and what you need to see.

The product, the hardware you have already chosen, and what your customer pays for.

No slide deck, no obligation.

Or email [email protected] directly.