UNI-T UT391 User Manual

Details permitted and prohibited usage of the laser distance meter.

Explains the laser class of the product and associated eye safety warnings.

Identifies and describes the function of each button on the meter's keypad.

Details the various indicators and information shown on the meter's LCD screen.

Covers switching the device on/off, clearing data, and setting reference levels.

Explains how to adjust display illumination and set distance units.

Describes the procedure for taking a single distance measurement using the laser.

Details how to perform continuous measurements and capture minimum/maximum values.

Explains how to measure heights using two or three sequential laser readings.

Guides on calculating area and volume using measured dimensions.

Describes how to access and scroll through previous measurement records.

Lists technical specifications like range, accuracy, laser type, and IP rating.

Outlines the basic functions and features supported by the meter.

Instructions for battery installation, replacement, and low battery indication.

Provides guidelines for cleaning, general maintenance, and proper storage.

Lists common error codes, their causes, and corrective actions.