User Manual

Introduction
This manual contains information about procedures for handling, operations, warnings, and pre-
cautions about “Hand-held Barcode Reader HR-51 Series”.
Make sure to read this manual before use. Keep this manual in a safe place for future reference.
■ Symbols
This manual uses the following symbols that alert you to important messages.
Be sure to read these messages carefully.
Indicates reference pages in this manual or other manuals.
■ General Precautions
• At startup and during operation, be sure to monitor the functions and performance of
HR-51 and confirm the normal operation.
• We recommend that you take substantial safety measures to avoid any damage in the
event the HR-51 series malfunctions.
• If the product is modified or used in any way other than described in the specifications,
its functions and performance cannot be guaranteed.
• When the HR-51 series is used in combination with other devices, the functions and per-
formance may be degraded, depending on the operating conditions, surrounding envi-
ronment, etc..
• Do not use the HR-51 series for the purpose of protecting the human body.
■ Notice
When this product is used under the circumstances and operating environments
described below, adhere to the limitations of the ratings, take adequate measures to
ensure safety such as fail-safe installations and consult a KEYENCE sales representative.
• For use under circumstances or environments which are not described in the manual.
• For use with nuclear power control, railway, aircraft, vehicles, incinerators, medical
equipment, entertainment equipment, safety devices, etc.
• For use in applications where death or serious property damage is possible and exten-
sive safety precautions are required.
DANGER
Failure to follow instructions and mishandling the product may lead to death or
serious injury.
WARNING
Failure to follow instructions may lead to physical injury (i.e., electric shock,
burns, etc.).
CAUTION
Failure to follow instructions may lead to the product malfunctions.
Note
Provides additional information on proper operations that can be easily mistaken.