SEH IH-304, User Manual

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10 [en] User Manual
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Safety Regulations
The IH-304 is a USB hub for use in industrial environments.
The IH-304 expands the number of USB ports.
• Read the documentation and make sure that your system
meets the requirements listed therein.
• Avoid contact with humidity or liquids.
• The device must only be connected and operated if it is in
perfect condition.
• Do not open the housing. Unauthorized modifications to
the device can affect the product certification and are for-
bidden.
• The device must not be directly connected to outdoor
lines.
• Warning! This is a Class A product. In a domestic environ-
ment this product may cause radio interference in which
case the user may be required to take adequate measures.
• Only use a certified USB cable (< 3 m) listed at
www.usb.org.
• Electrostatic discharges (ESD) may impair device perfor-
mance.
• An interruption of the supply voltage may impair device
performance or cause malfunctions.
• Choose and use a power supply for the IH-304, which
meets the power supply requirements stated in this docu-
ment.
• The device and the power supply or power supplies must
be installed in the same control cabinet.
• The low-voltage cable between the power supply and the