Complete shutdown
If system operation, production or the data connection stops, SM Sentinel flags the condition that needs attention.
A stopped string, faulty connector or abnormal inverter can reduce production while the rest of the system keeps running. SM Sentinel regularly checks the available operational data, preserves the history and sends a notification about deviations that require attention.¹
Two minutes, using your own system data.The system may appear operational while the deviation grows day after day in the background.
Production, a string, an inverter or the data connection may stop.
The system continues running but no longer delivers its potential output.
Energy not produced today cannot be recovered later.
Missing energy must be purchased from the grid.
Even a complete shutdown is not always obvious. A partial shutdown is harder to see: the system may keep producing and appear to be operating normally.
If system operation, production or the data connection stops, SM Sentinel flags the condition that needs attention.
It follows fault codes and operating states available from the inverter and sends a clear notification about confirmed issues.
Where sufficiently detailed data is available, SM Sentinel also monitors defined partial operational deviations.¹
Preserved operational history provides a baseline for investigating slow and persistent changes.
¹ Available data varies by manufacturer and access level. During connection, we show exactly what SM Sentinel can see from your system.
Enter your own system data to estimate the financial impact of unnoticed production loss.
Estimated lost production: 3,287 kWh
Estimated lost production: 1,967 kWh
Estimated lost production: 640 kWh
This is an indicative seasonal estimate. It allocates 42% of annual production to summer, 8% to winter and 50% to spring–autumn. Actual production depends on weather, orientation, shading, the consumption profile and individual settlement terms.
SM Sentinel stores not only how much the system produced, but also the available AC, DC, string, temperature, status, fault and communication data at the frequency defined by the selected plan.¹
“Manufacturer monitoring shows how much the system produced. SM Sentinel remembers how it operated.”
The relationship between these values can provide useful clues when investigating a deviation and its possible cause.¹
It keeps watch at the frequency defined by your plan, even when you do not open the manufacturer application.
Even a complete shutdown may only be noticed during a later check
Monitors when operation, production or the data connection stops
A manufacturer fault signal still has to be noticed and interpreted
Follows available fault signals and sends clear notifications about confirmed issues
A partial shutdown can remain hidden while the system still produces
Uses available telemetry to monitor defined partial operational deviations
Slow changes can blend into normal seasonal variation
Preserved history provides a baseline for investigating persistent changes
Solar-system owners should not be expected to interpret charts, fault codes and inverter data every day.








SM Sentinel grew from years of installing, operating and troubleshooting solar systems in real conditions.
The rest of the system kept producing, so the missing output was not visible from the outside.
Read the storyIt is based on long-term technical experience with solar systems, inverters and real-world faults.
Learn about our backgroundYou receive feedback even while everything is operating normally: event history with Őrszem, a monthly summary with Plusz and a detailed monthly report with Prémium.
You do not have to interpret manufacturer charts, fault codes and technical data on your own.
Know when the system is operating normally — and when it is time to act.SM Sentinel helps make deviations visible earlier without requiring constant manual portal checks.
Start monitoring →SM Sentinel helps make deviations visible earlier without requiring constant manual portal checks.
Start registration →SM Sentinel helps make deviations visible earlier without requiring constant manual portal checks.
Request consultation →SM Sentinel helps make deviations visible earlier without requiring constant manual portal checks.
Partner consultation →SM Sentinel checks incoming operational data at the frequency defined by your plan. When a monitored value departs from a configured condition, it sends a clear notification about the detected state.
Available operational data is received and preserved.
Operation outside the configured conditions is highlighted.
You receive a clear notification about the detected state.
Expert diagnosis or repair can be requested as a separate service.
Compare current prices, check frequencies and report content in one place. Displayed HUF prices and contractual terms apply to Hungary.
Checks every 1 hour with clear issue notification.
Start with this planChecks every 30 minutes with the report included in the plan.
View pricesAll current Hungarian prices and conditions in one place, without hidden costs.
View plansWe first verify that the system can be connected. Payment is due only after a successful connection.
Preserved data provides a long-term comparison baseline for investigating the system.
SM Sentinel monitors and notifies. Expert diagnosis and repair can be requested as separate services.
Instead of charts and fault codes, you receive a clear notification about the detected condition.
Choose an SM Sentinel plan, have compatibility checked and keep the operation of your solar system visible over time.
Compatibility is checked before payment. A payment obligation arises only after a successful connection.