Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 6)

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IMPORTANT Notice:
WEIDMULLER products are designed to be used in industrial environments, by experienced industrial
engineering personnel with adequate knowledge of safety design considerations.
WEIDMULLER radio products are used on unprotected license-free radio bands with radio noise and
interference. The products are designed to operate in the presence of noise and interference, however in an
extreme case, radio noise and interference could cause product operation delays or operation failure. Like all
industrial electronic products, WEIDMULLER products can fail in a variety of modes due to misuse, age, or
malfunction. We recommend that users and designers design systems using design techniques intended to
prevent personal injury or damage during product operation, and provide failure tolerant systems to prevent
personal injury or damage in the event of product failure. Designers must warn users of the equipment or
systems if adequate protection against failure has not been included in the system design. Designers must
include this Important Notice in operating procedures and system manuals.
These products should not be used in non-industrial applications, or life-support systems, without consulting
WEIDMULLER first.

A radio license is not required in some countries, provided the module is installed using the aerial and
equipment configuration described in the WI-I/O 9-U2 Installation Guide. Check with your local
distributor for further information on regulations.

Operation is authorized by the radio frequency regulatory authority in your country on a non-protection
basis. Although all care is taken in the design of these units, there is no responsibility taken for sources
of external interference. Systems should be designed to be tolerant of these operational delays.

To avoid the risk of electrocution, the aerial, aerial cable, serial cables and all terminals of the WI-I/O
9-U2 module should be electrically protected. To provide maximum surge and lightning protection, the
module should be connected to a suitable earth and the aerial, aerial cable, serial cables and the
module should be installed as recommended in the Installation Guide

To avoid accidents during maintenance or adjustment of remotely controlled equipment, all equipment
should be first disconnected from the WI-I/O 9-U2 module during these adjustments. Equipment
should carry clear markings to indicate remote or automatic operation. E.g. "This equipment is
remotely controlled and may start without warning. Isolate at the switchboard before attempting
adjustments."

The WI-I/O 9-U2 module is not suitable for use in explosive environments without additional protection.

The WI-I/O 9-U2 operates unlicensed Radio frequencies and proprietary protocols to communicate
over the radio. Nevertheless, if your system is not adequately secured, third parties may be able to
gain access to your data or gain control of your equipment via the radio link. Before deploying a
system make sure you have considered the security aspects of your installation carefully.
Release Notice:
Feb 2013 release of the WI-I/O 9-U2 Wireless I/O User Manual version 1.2.2 which applies to the
version 1.2.2 firmware.