Extech Instruments DV20 User Manual

Non-Contact Voltage Detector and Flashlight
Extech DV20
1

Intended use

.
The "Non-contact voltage tester" detects steady state electrostatic field generated by AC voltage via insulation without requiring
contact to the bare conductor. A red glow at the tip indicates the presence of voltage.
The device must be operated exclusively by AAA batteries. Contact with moisture must be avoided by all means possible.
This product fulfills European and national requirements related to electromagnetic compatibility (EMC). CE conformity has been
verified and the relevant statements and documents have been deposited at the manufacturer.
Unauthorized conversion and/or modification of the device are inadmissible because of safety and approval reasons (CE).
Any usage other than described above is not permitted and can damage the product and lead to associated risks such as short-
circuit, fire, electric shock, etc. Please read the operating instructions thoroughly and keep them for further reference.

2. Symbols explanation

An exclamation mark within an equilateral triangle indicates important information in the operating instructions. Carefully
read the whole operating instructions before operating the device, otherwise there is risk of danger.
The lightning symbol with arrowhead within an equilateral triangle is intended to alert the user to the presence of
uninsulated voltage within the device's enclosure that may be of sufficient magnitude to constitute a risk of electrical shock
to persons.
This device provides basic insulation with supplementary insulation.
This device is designed to protect against transient voltages from fixed installations and for cases where the reliability and
the availability of the equipment are subject to special requirements. Examples include building wiring, industrial
equipment with permanent connection to fixed installation.

3. Safety instructions

We do not assume liability for resulting damages to property or personal injury if the product has been abused in any way or
damaged by improper use or failure to observe these operating instructions. The warranty will then expire!
The icon with exclamation mark indicates important information in the operating instructions. Carefully read the whole operating
instructions before operating the device, otherwise there is risk of danger.

Product safety

• The voltage between the measuring device and earth must not exceed 600V in overvoltage category III.
•
This device can be used in environment where only non-conductive pollution occurred or temporary conductivity caused by
condensation occurred occasionally.
• The device must not be subjected to heavy mechanical stress.
• The device must not be exposed it to extreme temperatures, direct sunlight, intense vibration or dampness.
•
The device must not be exposed to humidity or liquids. It must be used under appropriate weather conditions only or with
appropriate protection in case of outdoor use.
• When operating the device, please equip proper protective equipment as required by local or national authorities.

Battery safety

• Correct polarity must be observed while inserting the batteries. ("+" = positive; "–" = negative).
•
Batteries should be removed from the device if it is not used for a long period of time to avoid damage through leaking.
Leaking or damaged batteries might cause acid burns when in contact with skin, therefore use suitable protective gloves to handle
corrupted batteries.
•
Batteries must be kept out of reach of children. Do not leave the battery lying around, as there is risk, that children or pets swallow
it.
• All the batteries should be replaced at the same time. Mixing old and new batteries in the device can lead to battery leakage and
device damage.
• Batteries must not be dismantled, short-circuited or thrown into fi re. Never recharge non-rechargeable batteries. There is a risk
of explosion!
User Manual
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