Uni-T UT381A digital light meter

Uni-T UT381A digital light meter

A safe, reliable lux meter for home, school, or site checks. Simple to use and ready for busy Aussie families.

Table of contents

Safety and certifications
Brightness range and accuracy
Probe options
Smart app and data logging
Power and battery life
Size, build and weather use
What’s in the box
Quick tips

Safety and certifications

Best for parents who want safe gear that meets standards and lasts.

✅ CE and UKCA certified for peace of mind

✅ RoHS compliant for safer materials

✅ Clear English menu plus multi-language support

Brightness range and accuracy

Great for checking kids’ study lights, home offices, and workshop tasks.

✅ Wide range from 0 to 400000 lx for dim rooms to bright outdoors

✅ Auto ranging with fast response for easy readings

✅ Accuracy to ±3% with standard light source at 2856 K

✅ Switch between lx and fc with one tap

✅ Colour correction coefficient for more true-to-life results

Probe options: integrated, split, rotatable

Handy when you need to measure at odd angles or hard-to-reach spots.

✅ Integrated probe for fast everyday checks

✅ Split design for tight areas like under shelves

✅ Rotatable head to aim at the light without moving the meter

Smart app and data logging

Perfect for tracking changes over time and sharing results with carers or teachers.

✅ Bluetooth app connection for live view and easy exports

✅ Store up to 99 sets with intervals from 1 to 59 seconds

✅ Max, min, and average to spot trends quickly

✅ Real-time clock syncs with your phone for tidy logs

Power and battery life

Good for long test days or school projects without constant charging.

✅ Runs on three AAA alkaline batteries for easy replacement

✅ Over 100 hours with backlight and Bluetooth off

✅ Auto power off to save battery when life gets busy

Size, build, and weather use

Ideal for home checks, classrooms, or site use in typical Aussie conditions.

✅ Compact body 235 × 64.5 × 39.8 mm for one-hand use

✅ Light weight around 257 g without batteries

✅ Works from −10 to 50 °C under non-condensing humidity

✅ Backlight screen for low-light rooms

✅ Over-range and low-battery alerts to avoid bad readings

What’s in the box

Great for a quick start out of the box with no extra spend.

✅ Quick start guide and safety info

✅ Three AAA batteries to get going

✅ Type-C cable for app syncing power needs

✅ Wrist strap and gift box for storage

Quick tips

Helpful when you want simple, repeatable checks at home or on site.

✅ Hold the probe at work height, not the floor, for true readings

✅ Use average mode to smooth out flicker and tiny changes

✅ Log study areas and compare before and after bulb changes