Hot Surfaces Hazard - Cisco CLI User Manual

Command-line interface user manual
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LASER RADIATION
If any Cisco hardware device is equipped with one or more
SFP fiber-optic modules, it is classified as a Class 1 laser
product. It may use laser-emitting components and/or very
high-intensity light sources.
Do not look directly at the input/output end of the unit's SFP
connector, or at the input/output end of any fiber-optic
cable. Fiber-optic systems frequently use high-intensity light
from laser or LED sources that may cause temporary or
permanent blindness.
For additional guidance regarding the safe use of laser-
based and LED-based fiber-optic technology, refer to ANSI
Z136.2 (Safe Use of Optical Fiber Communication Systems
Utilizing Laser Diode and LED Sources).

2.3. Hot surfaces hazard

HOT SURFACES
The outer surfaces of some radio transceiver and gateway
unit enclosures may become hot during normal operation.
The outer enclosures of such devices are marked with the
symbol seen above. During normal operation, do not touch
or handle the unit enclosure without personal protective
equipment.
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