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UEi DM420 User Manual

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DM420
INSTRUCTION MANUAL
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UEi DM420 Specifications

General IconGeneral
TypeDigital Multimeter
Max Voltage (AC/DC)600V
Max Current (AC/DC)10A
Frequency Measurement10MHz
Temperature Measurement-40°C to 1000°C
Battery Type9V
ContinuityYes
Diode TestYes
BacklightYes
Auto RangingYes
Data HoldYes
Min/MaxYes
Relative ModeYes
Safety RatingCAT III 600V
DisplayLCD
Resistance Measurement40MΩ
Capacitance Measurement100μF
WeightApprox. 300g

Summary

Introduction and Overview

Safety Notes and Warnings

Critical safety precautions and warnings for using the multimeter.

International Symbols Explained

Explanation of symbols used on the multimeter and in the manual.

Controls and Indicators Identification

Identification and function of the multimeter's controls and display elements.

Operating Instructions

Measuring DC Volts

Step-by-step guide to measuring DC voltage using the multimeter.

Measuring AC Volts

Step-by-step guide to measuring AC voltage using the multimeter.

Measuring DC Current

Procedure for measuring DC current, including connection and safety precautions.

Measuring AC Current

Procedure for measuring AC current, including connection and safety precautions.

Measuring Resistance and Continuity

How to measure resistance and use the continuity buzzer function.

Measuring Capacitance

Steps for measuring capacitance, including safety precautions.

Audible Continuity Buzzer Operation

Instructions for using the audible continuity buzzer feature.

Diode Test Procedure

Procedure for testing diodes using the multimeter's diode test function.

Maintenance and Specifications

Periodic Service and Care

Guidelines for maintaining the multimeter for long-term reliable service.

Cleaning and Decontamination

Instructions on how to properly clean the multimeter's case.

Battery Replacement Instructions

Steps for safely replacing the multimeter's battery.

Technical Specifications

Key technical data including operating temperature, humidity, and battery type.

Limited Warranty Information

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