1. Introduction
DS-280H Series User’s Manual
3
Safety Precautions
Understand the following definitions and precautions to use the product safely.
Safety Information
This document provides safety information using the following symbols to prevent accidents resulting in
injury or death and the destruction of equipment and resources. Understand the meanings of these labels
to operate the equipment safely.
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or in property damage.
Caution on the DS-280H Series
Handling Precautions
DANGER
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This product supports an attached AC adapter and AC cable only.
WARNING
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Always check that the power supply is turned off before connecting or disconnecting power cables
and other cables.
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Users should not attempt to disassemble or modify this equipment, or to replace components. The
manufacturer may not be able to provide service for equipment that has been modified by the user.
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This product is not intended for use in aerospace, space, nuclear power, medical equipment, or other
applications that require a very high level of reliability. Do not use the product in such applications.
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If using this product in applications where safety is critical such as in railways, automotive, or
disaster prevention or security systems, please contact your retailer.
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Do not attempt to replace the battery as inappropriate battery replacement poses a risk of explosion.
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For battery replacement, contact your retailer as it must be performed as a process of repair.
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When disposing of a used battery, follow the disposal procedures stipulated under the relevant laws
and/or municipal ordinances.