A reefer has its own refrigeration unit and depends on the plug in the yard. Unplugged to move to another stack, or with a loose plug, it warms up in silence. Temperature and power measured on every container replace the damage survey with an alert before the loss.
Three facts of port operations.
Cargo that loses temperature, trucks that wait and cranes that stop for wind. All three can be measured, and all three turn into money.
Truck turn time, from gate-in to gate-out, is how terminals and truckers measure congestion at the gate. Geofences at the gate, the staging area and the quay show where each truck waited, for how long and at which step.
Every quay and yard crane has a maximum operating wind speed set by its manufacturer, and it is the gusts that trip it. A weather station at the point of operation gives the warning in time and keeps the record that justifies the stoppage.
From the reefer plug to the gate.
Every container, every machine and every truck with time, place and status, and the alert going to whoever is on duty.
Plugged-in reefers
Reading from the refrigeration unit’s controller, with temperature, setpoint and alarm, plus power at the plug. A container without power or out of range becomes an alert for the duty team.
Yard equipment
Reach stackers, forklifts and terminal tractors with position, engine hours and geofences. Usage-based maintenance and the real utilization of each machine.
Gate and waiting time
Geofences at the entrance, the staging area and the quay. How long each truck waited, where and at which step.
Wind and rain
A weather station at the terminal: wind for crane operations, rain for bulk cargo that cannot get wet, and a history to justify the stoppage.
Pedestrians and machines
A camera with pedestrian detection on the forklift and the reach stacker, the same one used in IoT Safety.
Shock and damage logger
It goes inside the container or the box and logs position, temperature and impact from the port to the destination. Transport damage stops being one word against another, and the data flows by API to the terminal system.
- 22:10Reefer in block C, stack 4: no power at the plug Alert
- 22:12Alert sent to the duty team on WhatsApp Cellular
- 22:31Power restored; temperature returning to range Cellular
- 23:05Wind gust above the crane limit Alert
- 23:40Truck left the gate: 6 h 15 min between arrival and departure Log
Illustrative example. Limits and recipients for each alert are configured with the terminal.
Four steps, with one person accountable from start to finish.
- 01
Survey
How many reefer plugs, which yard equipment, where the gate is, what the terminal system already records and what is missing.
- 02
Pilot
One reefer block and a few machines, with the data compared against your current records for a month.
- 03
Rollout
The whole yard, the weather station and the gate geofences, with the dashboard and the duty alerts.
- 04
Operation
Support from the team that installed it and a review of alert limits with the operation.
We are honest about what is ours. The reefer’s refrigeration unit belongs to its manufacturer, and the terminal operating system belongs to whoever already runs it. The reefer controller reading, the sensors and the damage logger are manufactured by us: we measure what the terminal does not see in one place, bring it to one dashboard and alert the right person. In the yard over the cellular network, and on the road with no tower over the DG satellite network, the data arrives in minutes.
The usual questions, answered plainly.
Do you monitor the reefer during the sea voyage?
Our focus is the yard, the inland port and the road. On board, the reefer is connected to the ship’s power, and onboard data belongs to the shipping line. On the road inland, monitoring continues over cellular or the DG satellite network, in minutes.
Does it work at an inland port or dry port?
The same way: reefer plugs, yard equipment, gate and weather station. An inland terminal has the same blind spots as a seaport, just farther from the sea.
Does the weather station replace official forecasts?
No. It measures wind, rain and temperature at the exact point of operation, with history, which is what a crane stoppage and a delay justification need.
Does it integrate with the terminal operating system?
Yes, by REST API. The scope is defined in the survey, with the terminal’s IT team.
Tell us the size of the yard and what hurts most.
An answer from an engineer, not a bot. Tell us how many reefer plugs and which equipment the terminal has.














