Optical Sensors & Detector – UV Index Measurement
Safester UVI
Safester UVI – Smartphone-Based UV Index Meter for Accurate Personal and Environmental Solar Radiation Monitoring
The Safester UVI is a smartphone-based UV Index and solar-radiation measurement instrument developed by SGLUX GmbH in cooperation with United Spectrum Instruments.
It transforms any Android or iOS device into a portable, real-time UV Index meter, enabling users to monitor personal and environmental UV exposure instantly.
Equipped with a precision SiC UV photodiode, erythema-weighted spectral filter, and integrated electronics, Safester UVI provides scientifically accurate, traceable UV Index readings comparable to professional meteorological instruments.
The lightweight USB-connected module delivers live readings through the Safester mobile app, featuring data logging, exposure alarms, and graphical trends.
Designed for researchers, health professionals, outdoor workers, and individuals, it supports public health awareness, solar safety, and climate education.
With NIST/PTB-traceable calibration, high solar blindness, and maintenance-free operation, Safester UVI is the most convenient way to measure UV Index anywhere, anytime.
Understanding Safester UVI
The Safester UVI measures erythemally effective ultraviolet radiation (280–400 nm) and translates it directly into the standard UV Index (UVI).
Its built-in SiC photodiode reproduces the CIE erythema action curve, while the internal amplifier converts UV intensity into a digital signal readable by smartphone.
Through the companion app, users can view live UVI data, receive over-exposure alerts, and store long-term statistics.
Compact and calibration-traceable, the Safester UVI provides laboratory-grade accuracy in a consumer-friendly device, ideal for both personal safety and field data collection.
Technical Specifications
| Feature | Specification |
| Function |
Smartphone-based UV Index (Erythema-weighted) measuring device
|
| Detector Type |
Silicon Carbide (SiC) photodiode with optical erythema filter
|
| Spectral Range |
280 – 400 nm (CIE erythema weighted)
|
| Output Signal |
Digital UVI value via USB/mobile interface
|
| Measurement Range |
0 – 20 UV Index (UVI)
|
| Accuracy | ±5 % of reading |
| Visible Blindness |
> 10¹⁰ (Smax / S>405 nm)
|
| Response Time | < 1 s |
| Calibration | NIST / PTB traceable |
| Power Supply |
Smartphone USB port (5 V DC)
|
| Data Interface |
USB-C / Lightning (variant dependent)
|
| Operating Temperature | 0 … +60 °C |
| Storage Temperature | −20 … +70 °C |
| Dimensions |
Approx. 55 × 20 × 12 mm
|
| Weight | < 20 g |
| App Compatibility |
Safester App (Android & iOS)
|
| Functions in App |
Live UVI display, alarms, logging, graphical analysis
|
| Use Cases |
Personal sun safety, outdoor research, education, UV exposure tracking
|
Key Features and Advantages
Smartphone-Integrated UV Index Measurement
Transforms your smartphone into a professional UV Index meter with digital read-out and alarm functions.
Erythema-Weighted Accuracy
Spectral response matches the CIE erythema action spectrum, ensuring biologically meaningful UV Index results.
Plug-and-Measure Operation
No calibration or configuration required – connect Safester UVI via USB and start measuring immediately.
High Solar Blindness and Low Noise
SiC detector suppresses visible and IR light by >10¹⁰, guaranteeing clean UV-only data.
Real-Time Data and Logging
The Safester App displays live UV Index values, records daily exposure, and exports data for research or safety audits.
Traceable Calibration and Reliability
Each unit is factory-calibrated against NIST/PTB standards, ensuring precision and repeatability over time.
Portable and Power-Efficient Design
Lightweight and energy-efficient, drawing minimal power from the smartphone USB port.
Educational and Professional Utility
Equally suited for public health campaigns, schools, research labs, and field surveys.
By combining professional-grade accuracy with mobile accessibility, the Safester UVI sets a new standard for personal and scientific UV Index monitoring.
Applications Across Industries
Public Health and Safety Awareness
Used in sun-exposure campaigns and health initiatives to educate the public about safe UV limits.
Meteorological and Environmental Monitoring
Supports field teams and citizen science networks for local UV Index data collection.
Research and Education
Ideal for universities and institutes to teach UV measurement principles and analyze solar variations.
Outdoor Industry and Workplace Safety
Assists construction, agriculture, and aviation teams in tracking UV risk levels for workers.
Consumer and Wellness Devices
Integrates with smartphone apps and wearables for personal UV dose tracking.
Field Calibration Reference
Serves as a portable reference for verifying larger UV Index stations and instruments.
The Safester UVI bridges the gap between professional UV radiometry and personal safety, empowering users to understand and manage sun exposure accurately anywhere in the world.
Why Choose United Spectrum Instruments?
-
Exclusive Indian partner for SGLUX Safester UVI devices
-
Expertise in UV Index measurement and solar monitoring solutions
-
Calibration traceable to NIST/PTB standards with local support
-
Affordable pricing for educational, industrial and public health applications
-
Pan-India distribution with after-sales service and integration assistance
FAQs
How does Safester UVI work?
It uses a SiC UV photodiode to convert solar UV radiation into a digital UVI value read via smartphone.
Is it accurate enough for scientific use?
Yes – it’s factory-calibrated and traceable to NIST/PTB standards.
Does it require an external power supply?
No, it draws minimal power directly from the smartphone’s USB port.
Can data be saved or shared?
Yes, the Safester App allows data logging, graph viewing and CSV export for analysis.
How does United Spectrum support Indian customers?
By offering local distribution, integration guidance, and responsive after-sales service for Safester series devices.
GET IN TOUCH WITH US
Have Any Questions ?
FAQs
How does Safester UVI work?
It uses a SiC UV photodiode to convert solar UV radiation into a digital UVI value read via smartphone.
Is it accurate enough for scientific use?
Yes – it’s factory-calibrated and traceable to NIST/PTB standards.
Does it require an external power supply?
No, it draws minimal power directly from the smartphone’s USB port.
Can data be saved or shared?
Yes, the Safester App allows data logging, graph viewing and CSV export for analysis.
How does United Spectrum support Indian customers?
By offering local distribution, integration guidance, and responsive after-sales service for Safester series devices.
WHAT WE OFFER
Reliable Engineering Solutions for Modern Manufacturing
Industrial Laser Systems
Laser Sources
