Key Specifications

Model

UT381A

Certificates

CE, UKCA, RoHS

Measurement

Illuminance Range

0 ~ 400,000 lx (0 ~ 37,160 fc)

Resolution

0.01 lx (0.01 fc) at 0–99.99 lx
0.1 lx (0.1 fc) at 100–999.9 lx
1 lx (1 fc) at 1000–400,000 lx

Accuracy

±3% (calibrated to 2856K standard light source)
±6% (other visible light sources)

Unit Switch

lx / fc (1 fc = 10.764 lx)

Functions

Auto Range

Yes

MAX / MIN / AVG

Yes

Data Hold

Yes

Color Correction Coefficient (CCF)

Yes

Backlight

Yes

Bluetooth App

Yes

Data Record

99 Sets

Record Interval

1 ~ 59 Seconds

Over-range Indication

OL Display

Low Battery Indication

Auto power off after low battery warning

Auto Power Off

10 seconds inactivity (cancelable)

Real-Time Clock

Auto sync via manual setting or mobile app

Probe

Probe Design

Integrated (rotatable) / Split design

Power

Battery

AAA × 3 (1.5V each)

Battery Life

Over 100 hours (Bluetooth & backlight off, alkaline batteries)

Environmental

Operating Temperature

-10°C ~ 50°C

Storage Temperature

-20°C ~ 70°C

Humidity

< 90% RH (operating), < 80% RH (storage, non-condensing)

Physical

Product Size

235 × 64.5 × 39.8 mm

Net Weight

Approx. 257 g (excluding batteries)

Accessories

Standard Accessories

Quick start guide, 3 × AAA batteries, strap, safety instructions, gift box

Packaging

Units per Carton

5 pcs

Carton Size

395 × 290 × 160 mm