1. A lock that still has to open when the guest is at the door
International real estate covers smart locks, property inspections, energy management, overseas property, and a property platform. Developers and property companies place smart locks, inspection devices, and energy meters in many countries, and each one has to reach headquarters and the property platform while the door is being opened or the meter is being read. The SIM is what keeps that device online, so it has to work in every country on the portfolio, keep resident data private, and sit inside the compliance the operator already holds.
SimtoLink supplies international IoT SIMs to cross-border developers, property companies, and PropTech firms. Coverage spans 200+ countries and regions and 600+ operator networks, as eSIM or physical SIM, for smart locks and inspection devices. One SIM stays in the device when a building is opened in another country.
2. The lock, the patrol, the meter, and the owner abroad
Real estate covers smart locks, property inspections, and energy management.
Smart locks and a remote open
A smart lock talks to the property platform (PMS) for a remote open when a host lets a guest in, an open log with time and user ID, and an alert for a forced entry or a door left open. On Airbnb or Vrbo the dynamic code has to land in under 2 seconds when the guest arrives. A lock uses about 5–20MB a month, which is a low-cost plan. Locks in many countries sit in one SimtoLink estate.
Inspections and work orders
An inspector walks a route with a PDA and sends inspection records — a checkpoint and a photo — a work order when something is broken, and a photo of 1–5MB as evidence. The repair is assigned on the platform, and the closing photo is what finishes the ticket. A chain that operates in several countries puts every handheld on the headquarters system. A shared pool is how that airtime stays one cost.
Energy management and metering
Electricity, water, and gas meters report sub-metered use to the energy platform (EMS) every 15–60 minutes. That supports tenant billing, benchmarking against similar buildings, and an alert when water use jumps, which often means a leak. Once readings from buildings in several countries are in one place, the energy report LEED or BREEAM asks for can be produced from the same feed. One SIM plan is how those meters join one energy system.
Overseas property
A developer that builds and holds buildings in several countries puts every project on one SIM plan. An overseas owner watches the lock, the cameras, and energy use in the app, and the property company does not buy a local SIM in each country. Pricing is the same, the bill is itemized, and usage is reported by project or by building, so operating cost in each country can be closed. Resident data follows local privacy rules, including GDPR, and SimtoLink supports a security assessment when data has to leave a country.
3. Data per lock and meter
Each device uses about 50–200MB a month. Most of that is unlock commands and open logs, inspection records and work orders, and the messages to the property platform. There are many devices and little data on each SIM, so a shared pool fits better than a plan sized for one lock.
Several SIMs can share one pool, which matches a developer with projects in many countries. The platform reports consumption by country and project and flags unusual use.
4. An open log, a local-storage rule, and a lock that stays up
- Resident data: An open log and an owner record are personal data. Send them on a private APN with TLS, in line with GDPR and the data rules of each country.
- Buildings in many countries: A device has to change networks on its own. Pricing is the same across those countries, and the bill is itemized.
- Data kept in-country: Some countries require property data to stay local. SimtoLink supports a security assessment when data has to leave.
- Around the clock: A lock and an inspection route do not pause overnight. The SIM can switch among operators when one network goes quiet.
5. What changes for a building in another country
Coverage spans 200+ countries and regions and 600+ operators. A shared data pool absorbs projects in many countries. Activation and the fleet sit in one SimtoLink console. A private APN keeps property traffic off the public internet.
6. Before the first lock is commissioned
Count devices, countries, monthly data, and how the lock or meter joins the property platform. From that, choose a single SIM or a shared pool, and pay-as-you-go or a monthly bundle. Test in the countries where the buildings will actually open. 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 cross-border developers, property companies, and PropTech firms. If you are connecting locks, inspections, and meters abroad, contact SimtoLink for a plan built around that portfolio.