User's Manual

Radio/Serial Telemetry Module User Manual
Page 4 © March 2000
How to Use This Manual
To receive the maximum benefit from your 905 product, please read the Introduction, Installation
and Operation chapters of this manual thoroughly before putting the 905 to work.
Chapter Four Configuration explains how to configure the modules using the Configuration
Software available. For configuration using the on-board switches, refer to the separate 905 Switch
Configuration Manual.
Chapter Five Specifications details the features of the product and lists the standards to which the
product is approved.
Chapter Six Troubleshooting will help if your system has problems and Chapter Seven specifies
the Warranty and Service conditions.
The foldout sheet 905 Installation Guide is an installation drawing appropriate for most
applications.
Warning !
1. For 905U modules, a radio licence is not required in most countries, provided the module is
installed using the aerial and equipment configuration described in the 905 Installation
Guide. Check with your local 905 distributor for further information on regulations.
2. For 905U modules, operation is authorised 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. The 905 intelligent
communications protocol aims to correct communication errors due to interference and to
retransmit the required output conditions regularly. However some delay in the operation of
outputs may occur during periods of interference. Systems should be designed to be
tolerant of these delays.
3. To avoid the risk of electrocution, the aerial, aerial cable, serial cables and all terminals of
the 905 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.
4. To avoid accidents during maintenance or adjustment of remotely controlled equipment, all
equipment should be first disconnected from the 905 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."
5. The 905 module is not suitable for use in explosive environments without additional
protection.