NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
NVR-3000 OM.E 20210412-02
13
Click
[KEY]
to switch the buzzer on or off.
2.8.3.2 ALARM BUZZER
Click
[SYSTEM ALARM]
to switch the alarm buzzer on or off.
By setting the
[SYSTEM ALARM]
, alarm that sounds against system faults and message receiving may be
enabled or disabled.
2.8.3.3 OFF HOOK SPK
Click
[OFF HOOK SPK]
to switch the main speaker on or off when the handset is off-hook.
Содержание NVR-3000
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