switel BDT 800 Mode D'emploi page 92

To use the functions described here, you need
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the handset,
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the alarm unit
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and the DTMF programming unit, subsequently referred to as programming unit.
DTMF=Dualtone Multi-Frequency
INFORMATION ON PROGRAMMING
q
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Press on the alarm unit to cancel a process during programming.
#
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Press on the programming unit to confirm a setting.
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Press again to exit from Programming mode.
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To program the unit, hold the programming unit above
the handset microphone. Otherwise, it may not receive
the keytones properly.
Note: When programming, maintain a clearance of at least 1 m between the handset and alarm unit and lower the volume setting of the alarm
unit. Otherwise, interference noise could be produced which affects programming.
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Alarm Unit