Professional luxmeter UNI-T UT381A for precise measurement of illuminance from 0–400,000 lx. Offers Bluetooth connectivity, data logging (up to 99 sets), a rotating/detachable probe, auto-ranging, CCF correction for various light sources, and a backlit display. Ideal for laboratories, offices, retail, and industry.
Flexible measurements with a rotating and detachable probe
The probe can be rotated or used detached for convenient measurements in hard-to-reach places. The ergonomic body and clear LCD ensure easy readings in any environment.
Bluetooth connectivity and data logging
Store up to 99 measurement sets and transfer them via Bluetooth to the app. Set a logging interval of 1–59 s and monitor data in real time for accurate analysis.
Accuracy with CCF correction and auto-ranging
The Color Correction Factor (CCF) function and automatic range selection ensure stable and accurate results regardless of the light source type.
The UNI-T UT381A is a robust and reliable luxmeter designed for fast and accurate illuminance measurements indoors and outdoors. Thanks to the rotating or detachable probe and the clear backlit display, you can easily read values even in demanding conditions. Bluetooth support and storage of up to 99 sets enable efficient documentation and analysis of measured data.
Integrated Color Correction Factor (CCF) provides higher accuracy across different light sources. The instrument offers MAX/MIN/AVG, Data Hold, “OL” overrange indication, auto power-off, and long battery life. Certifications CE, UKCA, RoHS confirm safety and quality.
Key benefits:
- Wide measuring range 0–400,000 lx with fine resolution
- Bluetooth and logging of 99 sets with 1–59 s interval
- Rotating/detachable probe for flexible measurements
- CCF correction for accurate results with different light sources
- Backlit LCD, auto-ranging, and intuitive controls
Specifications
- Manufacturer
- UNI-T
- Model
- UT381A
- Safety certifications
- CE, UKCA, RoHS
- Measurement range
- 0–99.99 lx (99.99 fc); 100–999.9 lx (999.9 fc); 1000–400000 lx (37160 fc)
- Resolution
- 0.01 lx (0.01 fc) for 0–99.99 lx; 0.1 lx (0.1 fc) for 100–999.9 lx; 1 lx (1 fc) for 1000–400000 lx
- Accuracy
- ±3% (calibrated against 2856 K standard source); ±6% (other light sources)
- Units
- lx, fc (1 fc = 10.764 lx)
- Auto-ranging
- Supported
- MAX/MIN/AVG logging
- Supported
- Data Hold function
- Supported
- Color Correction Factor (CCF)
- Supported
- Display backlight
- Built-in
- Bluetooth
- Supported
- Data logging
- 99 sets
- Logging interval
- 1–59 s
- Real-time data display
- Supported (manual refresh or via app)
- Overrange indication
- “OL”
- Low battery indication
- Built-in (auto power-off after 10 s of icon flashing)
- Auto power-off
- Supported (can be disabled)
- Measurement method
- Integrated rotating probe or split design
- Power supply
- 3 × AAA
- Battery life
- More than 100 hours (with Bluetooth and backlight off)
- Operating temperature
- -10 °C to 50 °C, <90% RH (non-condensing)
- Storage temperature
- -20 °C to 70 °C, <80% RH (non-condensing)
- Weight
- Approximately 257 g (without batteries)
- Dimensions
- 235 × 64.5 × 39.8 mm
- Package contents
- Luxmeter, 3× AAA, wrist strap, manual
