Extech Extech EX410 Manual

User's Guide

Digital Multimeter

Extech 410

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Introduction

Congratulations on your purchase of the Extech EX410 Multimeter. This meter measures AC/DC
Voltage, AC/DC Current, Resistance, Diode Test, and Continuity plus Thermocouple Temperature. This
device is shipped fully tested and calibrated and, with proper use, will prov

ide years of reliable service.

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer
to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use, hazardous
voltages may be present

Double insulation

Thi

WARNING

CAUTION

MAX
600V

s WARNING symbol indicates a potentially hazardous situation, which if not

avoided, could result in death or serious injury.

This CAUTION symbol indicates a potentially hazardous situation, which if not
avoided, may result damage to the product.

This symbol advises the user that the terminal(s) so marked must not be
connected to a circuit point at which the voltage with respect to earth ground
exceeds (in this case) 600 VAC or VDC.

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CAUTIONS

 Improper use of this meter can cause damage, shock, injury or death. Read and understand

this user manual before op



Always remove the test leads before replacing the battery or fuses.

 Inspect the condition of the test leads and the meter itself for any damage before op

meter. Rep



Use great care when making measurements if the voltages are greater than 25VAC
35VDC. Th



Warning! This is a class A equipment. This equipment can cause interferences in the
quarters; in this case the operat



Always discharge capacitors and remove power from the device under test before pe
Diode, Resistance or Continuit

Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty



of connection to the recessed electrical contacts. Other means should be used to ens
the terminals are not "live".



If the equipment is used in a manner not specified by the manufacturer, the protection
by the equipment may be impaired.

 This device is not a toy and must not reach children’s hands. It contains

ell as small parts that the children could swallow. In case a child swallows any of th

w
please contact a ph

 Do not leave batteries and packing material lying around unattended; they can be da

for children if the

 In case the device is going to be unused for an extended period of time, remove the

to prevent them from training

Expired or damaged batteries can cause cauterization on contact with the skin. Always



therefor



See that the batteries are not short-circuited. Do not throw batteries

air or replace any damage befor

ese voltages are considered a shock ha

y use them as toys

e, use suitable hand gloves in such case

erating

the meter.

or can be required to carry out adeq

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ysician immediately

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living

uate measures.

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ure that

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hazardous objects as

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batteries

,

s

into the fire.

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OVERVOLTAGE CATEGORY III

This meter meets the IEC 61010-1-2001 standard for OVERVOLTAGE CATEGORY III. Cat III
meters are protected against overvoltage transients in fixed installation at the distribution level.
Examples include switches in the fixed installation and some equipment for industrial use with
permanent connection to the fixed installation.

SAFETY INSTRUCTIONS

This meter has been designed for safe use, but must be operated with caution. The rules listed
below must be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:

VAC 750V DC/AC

Function Maximum Input

V DC or V AC 1000V DC/AC, 200Vrms on 200mV range
mA DC 200mA 250V fast acting fuse
A DC 20A 250V fast acting fuse(30 seconds max every 15 minutes)
Ohms, Continuity 250Vrms for 15sec max

2. USE EXTREME CAUTION when working with high voltages.

3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 600V above earth
ground.

4. NEVER connect the meter leads across a voltage source while the function switch is in the
current, resistance, or diode mode. Doing so can damage the meter.

5. ALWAYS discharge filter capacitors in power supplies and disconnect the power when making
resistance or diode tests.

6. ALWAYS turn off the power and disconnect the test leads before opening the covers to replace
the fuse or battery.

7. NEVER operate the meter unless the back cover and the battery cover is in place and fastened
securely.

Input Protection Limits

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