Description
Key Benefits
- Supports up to six sensors for comprehensive PV system monitoring
- Enables early detection of performance anomalies using insolation and temperature data
- Offers flexible analog and digital input options
- Compatible with Fronius Solar.web and DATCOM systems
- Available in card or box format for installation flexibility
- Measures wind speed, ambient and module temperatures, insolation, and more
- Built-in digital channels for energy meters and pulsed signal inputs
Best Uses
Tech Specs
| Spec | Value |
|---|---|
| MPN | 4240104 |
| Power Supply | 12 V DC |
| Energy Consumption | 1.3 W |
| Interfaces | RS422 IN/OUT (RJ45) |
| Sensor Inputs | Up to 6 |
| Temperature Sensor Type | PT1000 |
| Temperature Measuring Range | -25°C to +75°C |
| Temperature Accuracy | ±0.5°C |
| Resolution | 1°C |
| Insolation Range | 0–100 mV / 0–200 mV / 0–1 V |
| Insolation Accuracy | ±3% of reading |
| Current Input Range | 0–20 mA, 4–20 mA |
| Current Accuracy | ±5% of reading |
| Digital Inputs (D1, D2) | Max 5.5 V, 2,500 Hz, 250 μs |
| Box Dimensions (L×W×H) | 7.76 × 4.33 × 2.24 in |
| Degree of Protection | IP20 |
Warranty
Important: Warranty terms may vary based on installation conditions and system configuration. See manufacturer documentation for full details.
More Info
The Fronius Sensor Box (MPN 4240104) supports up to six sensors, enabling detailed monitoring of photovoltaic systems for both residential and commercial applications.
It features dual RS422 interfaces for seamless integration with the Fronius Solar Net, enhancing communication and data collection capabilities.
Compatible with industry-standard PT1000 temperature sensors, it accurately measures temperatures within a range of -25°C to +75°C with ±0.5°C accuracy.
The device supports multiple input types including analog current inputs (0–20 mA, 4–20 mA) and digital inputs, allowing flexible sensor configurations.
Designed for system optimization, it enables target versus actual performance comparisons via the Fronius Solar.web platform.
Its built-in digital channels support energy meters and pulsed signal inputs, expanding its monitoring capabilities beyond temperature and insolation.
The Sensor Box is housed in a compact enclosure measuring 7.76 × 4.33 × 2.24 inches and offers an IP20 degree of protection, suitable for indoor installations.
Fronius is a global leader in solar energy solutions with over 75 years of innovation, providing reliable and high-quality products for PV system management.
Choosing this sensor box helps optimize solar system performance by enabling early detection of anomalies and comprehensive environmental monitoring.





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