1. What the recorder has to send while the cargo moves
International cold-chain logistics covers the temperature-controlled chain, cold-chain monitoring, cold stores, the pharmaceutical cold chain, cross-border fresh food, and reefer containers. Temperature loggers, refrigerated trucks, and cold-store sensors travel with the goods and have to reach the WMS, the TMS, and the cold-chain traceability platform. The SIM needs coverage in every country on the route, live temperature reports, and a record that can be audited.
SimtoLink supplies international IoT SIMs to cold-chain carriers, pharmaceutical companies, and fresh-food importers and exporters. Coverage spans 200+ countries and regions and 600+ operator networks, as eSIM or physical SIM, for temperature loggers, refrigerated-truck terminals, and cold-store gateways. One SIM works in more than one country, so the unit does not swap a local SIM at the border. The same path carries WHO GDP records, cold-chain break alarms, and temperature-drift logs.
2. Pharma, fresh food, cold stores, and reefers
The work splits across pharmaceuticals, fresh food, and other food. How tight the temperature band is, and which rulebook applies, are not the same in each case:
Pharmaceutical cold chain and GDP
GDP (Good Distribution Practice) requires temperature and humidity to be watched, and the record to be traceable, for the whole trip. The SIM keeps the logger online across borders for bands such as 2–8°C and −20°C, deviation alarms, and a full temperature mapping record. That is what EMA, FDA, and the destination country’s drug cold-chain rules expect.
Cross-border fresh food
Ocean reefer and food cold chain log temperature and humidity in holds and containers, and those readings have to keep uploading. The SIM keeps the logger online at the port, on the vessel, and at the destination port for HACCP critical-control-point data, origin traceability, and the compliance report the importing country asks for.
Cold stores and warehouse monitoring
Inbound and outbound terminals in a cold store or a temperature-held warehouse have to talk to the WMS in the cold so the stock count stays right. The SIM keeps those terminals online for temperature and humidity, inbound checks, and first in, first out (FIFO). That is the warehouse record ISO 22000 food-safety management expects.
Reefer containers at sea
A reefer container has to keep reporting temperature, humidity, and the refrigeration unit at the port, during loading, and at the destination. The SIM keeps it online alongside and at sea for remote temperature control, early fault diagnosis of the unit, and a live query for the cargo owner. That is what a BIMCO reefer contract and the destination port’s import cold-chain rules expect.
3. Data per logger, truck, or store
Each device uses about 50–300MB a month. Most of that is scheduled temperature and humidity reports, live deviation and exception alarms, and exchanges with the WMS, the TMS, and the traceability platform. A cold-chain file has to be complete, so keep 20–30% headroom.
Trucks and stores do not use data on the same days. Pooling the SIMs lets a quiet unit cover a busy one. The console splits usage by country and route and flags anything unusual.
4. A record that cannot be altered, and an alarm that cannot wait
- Temperature records: Pharma and food logs have to be traceable. Send them on a private APN with TLS so the record cannot be altered in transit.
- GDP and GSP: A pharmaceutical cold chain has to meet GDP and GSP in each country. The SIM is the compliant path for that data.
- A moving route: The unit travels with the goods, so it has to change networks on its own. Pricing is the same across those countries, and the bill is itemized.
- Alarms: A temperature deviation has to be raised as it happens. The path has to stay short and available.
5. What changes when the truck crosses a border
Coverage runs to 200+ countries and regions and 600+ operators, so the unit takes the best local network as it moves. A shared pool absorbs the swing between trucks and cold stores. The whole fleet sits in one SimtoLink console. A private APN keeps temperature data off the public internet.
6. From a route list to a field test
Start with the fleet: how many devices, which routes, monthly data, and how they talk to the WMS and the TMS. From that, choose a single SIM or a shared pool, and pay-as-you-go or a monthly bundle. Test in the target countries before a wider rollout. Activate SIMs, set the APN, and bind devices in bulk on the SimtoLink platform. After go-live, alert on data use and inspect on a schedule.
SimtoLink already supplies SIMs to cold-chain carriers and pharmaceutical companies. If you are connecting a temperature-controlled route, contact SimtoLink for a plan built around those lanes.