11
Subject to error and alteration
Safety notices
EMC
1
NOTE
Only shielded network cables may be used for connecting the
Web-IOs to the network.
In this case the Web-IOs meet the noise immunity limits for
industrial applications and the stricter emissions limits for
households and small businesses. Therefore there are no
EMC-related limitations with respect to the usability of the
devices in such environments.
The complete Declarations of Conformity for the devices described
in the manual can be found on the corresponding Internet page at
the W&T homepage: http://www.wut.de.
Batteries
The Web-IO Digital 4.0 relays contain a 3V Lithium-
Manganese dioxide battery cell type CR 1632 for buffering the
internal clock. This battery has a lifetime of 10 years and may
only be replaced by a battery of the same type.
If the Web-IO Digital 4.0 is operated in a network environment
with access to a time server, the battery is not absolutely
necessary for the correct functioning of the device and can be
removed.
1
CAUTION
The battery may be removed or replaced only by an electronic
specialist.
To remove the battery, open the housing as follows:
