UNI-T UT381A Lux Meter Data Logger

UNI-T UT381A Lux Meter Data Logger | Advanced Illuminance Meter with Bluetooth & Data Storage

Wide-Range Professional Light Measurement and Data Logging for Sri Lanka

The UNI-T UT381A Lux Meter is a feature-packed digital illuminance meter designed for professionals who require broad range measurement, advanced data logging, and real-time analysis. Whether you’re conducting energy audits, environmental research, or workplace safety checks in Sri Lanka, the UT381A offers pinpoint accuracy and powerful connectivity for comprehensive light intensity monitoring and reporting.

Engineered with a rotatable, split-probe design and Color Correction Coefficient (CCF), this device delivers reliable illuminance readings even in challenging environments. Bluetooth connectivity allows seamless data transmission to your smartphone via an intuitive app, while onboard data storage with a 1-59 second log interval supports thorough documentation for compliance or trend analysis. Its robust CE/UKCA certified build is trusted in labs, offices, street lighting, and commercial venues across Sri Lanka.

Key Features of the UT381A Lux Meter

Extra-Wide Measurement Range

Accurately measures from 0 to 400,000 Lux, covering everything from dim indoor ambient light to direct sunlight and industrial environments.

Rotatable & Split Probe Design

Versatile probe can be used integrated or split, and easily rotated for hard-to-reach areas—ideal for field audits and facility inspections.

Bluetooth App Integration

Supports Bluetooth app connection for real-time display, remote configuration, and wireless data management directly from your smartphone.

Advanced Data Logging & Storage

Onboard memory stores up to 99 sets of measurements with selectable 1-59 second intervals; perfect for long-term analysis or compliance record keeping.

Color Correction Coefficient (CCF)

Automatically applies CCF to improve accuracy across different light sources, enhancing results for LEDs, fluorescent, and halogen lighting.

MAX/MIN/AVG & Data Hold Functions

Instantly view maximum, minimum, and average values. Data hold and auto-range switching make capturing and analyzing results simple.

Long Battery Life & Auto Shutoff

Operates over 100 hours on standard alkaline batteries with auto power-off and low battery indication for hassle-free field use.

International Certifications

Product meets CE, UKCA, and RoHS standards for safety and reliability.

Common Applications

This advanced Bluetooth lux meter with data logger is perfect for:

Lighting Design & Installation Audits

Verify illuminance for architectural, street, or commercial lighting projects, using precise log intervals and wireless reporting.

Workplace & Facility Safety Checks

Track and analyze light level uniformity in offices, warehouses, and production areas to ensure OHS compliance.

Energy Efficiency Assessments

Perform energy audits to identify poorly-lit or over-illuminated sites for cost reduction and optimal performance.

Laboratory & Environmental Monitoring

Use in labs, cleanrooms, or research tasks where accurate, logged light data is crucial for results and documentation.

Technical Specifications of the UT381A

Product Name

UNI-T UT381A Lux Meter Data Logger

Measuring Range

0 to 400,000 Lux

Resolution

0.01 Lux (0-99.99 Lux), 0.1 Lux (100-999.9 Lux), 1 Lux (1000-400,000 Lux)

Accuracy

±3% at 2856K light source, ±6% for other visible light sources

Unit Selection

Lux / Foot-candles (FC)

Data Storage

99 sets, selectable 1-59 sec interval

Bluetooth Connectivity

Supported, via mobile app

Functions

MAX/MIN/AVG, Data Hold, Backlight, Auto Shutoff, Over-range (OL), Low Battery

Battery Life

100+ hours (alkaline, Bluetooth & backlight off)

Certifications

CE, UKCA, RoHS

Size & Weight

235 x 64.5 x 39.8 mm, 257g (no battery)

Power Source

3 x 1.5V AAA batteries

What's in the Box?

1 x UNI-T UT381A Lux Meter

3 x AAA Batteries

1 x Strap

1 x Quick Start Guide

1 x Safety Instructions

1 x Gift Box

Downloads

📄 Download UNI-T UT381A Datasheet
📄 Download UNI-T UT381A User Manual