Why do devices in the same shipment not upload data in real time?

Each device in the shipment behaves and connects on its own, independently from other device in the shipment.

Each device may be in a slightly different environment. For example, if a device is placed in a box in the middle of the pallet, surrounded by other products rich in water, cooling material, etc., it may experience difficulties connecting to the Controlant Cloud Platform, even when the devices that are placed in the outer boxes or on the side of the pallet connect fine. Differences in connectivity may also depend on the placement in a container, in a delivery truck, or in a warehouse.

The devices also have independent wake-up schedules even if they’re in the same shipment, so they wake up at different times. If the shipment is on the move, for example in a truck, some devices may attempt to connect at times when the signal strength is not good enough, while when the time comes for other devices to connect, the signal may have gotten better.

Placement in the shipment may also influence the device’s temperature condition. If the device is close to the cooling unit or cold air flow in the freezer and records a temperature below -20°C, it will stop connecting to the Controlant Cloud Platform until the next wake-up in a temperature above -20°C. At the same time, other devices in the same shipment may not experience the temperature going below -20°C, due to their different placement, and therefore continue to connect.

Devices may also have different initial battery charges, which can result in some devices draining the battery and entering Low power mode sooner than others.