Siemens WFZ661 Mounting And Commissioning Instructions page 31

Technical description
 Viewing window for roller
counter
 Position of optical interface
(IrDA)
The radio add-on modules WFZ661 regularly transmit the consump-
tion data of the connected water meters.
They can be used in combination with various meter designs.
When the radio add-on module leaves the factory, the clock and
calender functionality is already activated. All further functions are
deactivated.
Frequency band
S-Mode: 868.3 MHz
C-Mode: 868.95 MHz
Transmission power
SIMPLIFIED EU DECLARATION OF CONFORMITY
Hereby, SIEMENS Switzerland Ltd declares that the radio equip-
ment type WFZ661 is in compliance with Directive 2014/53/EU. The
full text of the EU declaration of conformity is available at the follow-
ing internet address: http://www.siemens.com/bt/download
Siemens Building Technologies
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 Screw bores, framed by LED
viewing slot
 Scanning modulator disc
 Battery chamber
10 dBm
A6V10986921_----_-b
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