The UNI-T UT381 illuminance meter measures light levels from 20 up to 20,000 lux across four auto-ranging steps, reading in lux or foot-candles. The sensor sits in the head of a slim 195 mm wand, so you can place it flat on a desk or work surface and read the display comfortably.

With 2044 sets of data storage, an adjustable 0.5~255 s record interval and a real-time clock, it is built for lighting surveys — checking workplace and classroom light levels, commissioning installations, and documenting readings against a standard.

Key Features

• 20~20,000 lux measurement 📏 — four ranges (20 / 200 / 2000 / 20000 lux) with auto ranging.
• ±3% accuracy ✅ — ±(3%+20) on the 20 lux range and ±(3%+8) on the rest.
• Lux and foot-candle units ⚡ — switch between lx and Fc for either standard.
• 2044-set data storage 🔧 — with 0.5~255 s adjustable record intervals for surveys.
• Real-time clock ✅ — timestamps readings so logs mean something later.
• MAX/MIN modes and data hold 🔋 — capture extremes across a space.
• Slim 185 g wand design 📏 — 195 × 45 × 26 mm, easy to position on a work surface.
• Auto power-off 🔋 — around 10 minutes, cancelable, plus restore-to-default mode.

Technical Specifications

What's in the Box

• UT381 illuminance meter
• Carrying bag
• English manual and gift box

Downloads

• UNI-T UT380 Series Product Page

Certifications: CE, UKCA | HS Code: 9027.50