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2 382270-EU-EN V2.3 9/12
Introduction
Thank you for selecting the Extech Model 382270. This device is shipped fully tested and calibrated
and, with proper use, will provide years of reliable service. Please visit the Extech Instruments website
(www.extech.com
) to check for the latest version of this User Guide.
Safety Information
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
Safety Precautions
To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-
circuit (arcing), the following safety precautions must be observed.
Prior to connection of the equipment to the mains outlet, check that the available mains
voltage corresponds to the voltage setting of the equipment.
Connect the mains plug of the equipment only to a mains outlet with an earth ground
connection.
Do not place the equipment on damp or wet surfaces.
Do not subject the equipment to direct sunlight or extreme temperatures.
Do not subject the equipment to extreme humidity or dampness
Replace a defective fuse only with a fuse of the original rating. Never short circuit the fuse or
the fuse housing
Do not exceed the maximum permissible input rating.
Comply with the warning labels and other info on the equipment.
Do not insert metal objects into the equipment by way of the ventilation slots
Do not place water-filled containers on the equipment
Do not operate the equipment near strong magnetic fields (motors, transformer etc.)
Do not subject the equipment to shocks or strong vibrations
Keep hot soldering irons away from the equipment
Allow the equipment to stabilize at room temperature before use
Do not modify the equipment in any way
All service and repair must be performed by qualified service personal.
Cleaning the meter housing
Prior to cleaning the meter housing, disconnect the mains plug from the power outlet. Clean only
with a damp, soft cloth and a commercially available mild household cleaner. Ensure that no water
gets inside the equipment to prevent possible shorts and damage to the equipment.
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