Extech 401050 Operating Manual

User’s Guide

Model 401050 AC/DC Voltage Detector

Safety Precautions

1. Improper use of this meter can cause damage, shock, injury or death. Read this guide before use.

2. The tester should not be used to test voltages above the stated ranges.

3. Secure the battery compartment screw before use.

4. Inspect the condition of the tester for any damage before use.

5. Remove the batteries from the meter if the meter is to be stored for long periods.

6. For Indoor use only

International Safety Symbols

Refer to the user’s guide for information. Hazardous voltages may be present

Battery Replacement

1. Using a screwdriver, remove the battery compartment screw cap (end
of handle) to access the batteries.

2. Remove the spring from inside the battery compartment and set it
aside.

3. Remove the batteries, noting their polarity and orientation.

4. Insert the two new LR41 batteries in the same orientation and polarity.
The positive + side of both batteries must be facing up toward the
opening of the battery compartment. If the batteries are not replaced in
this position, the instrument will not operate.

5. Replace the battery compartment spring.

6. Replace and secure the compartment screw cap.

Battery

Compartment

Specifications

AC Voltage (contact) test…………. 70 to 250VAC

AC Voltage (non-contact) test….... 70 to 600VAC (single sheathed insulation, single conductor)

DC Voltage / Polarity test……..….. 1.5V to 36V
Continuity test………………..……. 0 to 5M ohms
Batteries………………………...….. Two (2) LR41

Positive
side
up

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment
(a six month limited warranty applies on sensors and cables). If it should become necessary to return the instrument for service during or beyond the
warranty period, contact the Customer Service Department at [phone] ext. 210 for authorization or visit our website at www.extech.com (click
on ‘Contact Extech’ and go to ‘Service Department’ to request an RA number). A Return Authorization (RA) number must be issued before any product
is returned to Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This
warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper
maintenance or repair, or unauthorized modification. Extech specifically d isclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or replacement of the
product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.

All rights reserved including the right of reproduction in whole or in part in any form.

Copyright © 2004 Extech Instruments Corporation.

Website: www.extech.com; Email: [e-mail]

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Model 401050 Version 2.0 11/05