Furuno LH-3000 - Manual (Page 25)

2. OPERATION
19
2.12 Alarm Mode
The LH-3000 can operate as a burglar alarm by connecting an external, normal-open switch
to the ALRM terminals on the rear panel.
Both horn speakers are selected automatically when the alarm mode is enabled. If the
alarm is triggered, the volume output is automatically set to maximum.
Enabling the alarm mode
1. Press and hold down the [Upper Signal Select] key until the YELP indicator flashes.
Note that you may light the MAN indicator (with the [Lower Signal Select] key) instead of
the YELP indicator.
2. Press the [FUNC] key until the ALL, FWD, AFT and BOTH indicators light. The YELP
indicator goes off.
3. After approximately five minutes, the ALL, FWD, AFT and BOTH indicators go off. Then
the equipment goes into standby, lighting the BOTH indicator every four seconds to
indicate standby mode.
See the next page for procedure flow.
When an attempt is made to remove the Loud Hailer
When an attempt is made to remove the Loud Hailer, the alarm sound is released through
both horn speakers at maximum volume. The alarm sounds for two minutes followed by a
five-minute rest time. The BOTH indicator lights every four seconds during the sounding of
the alarm or the five-minute rest period.
Disabling the alarm mode
Press any key or switch other than the [AUX] or [DIM] key, or turn off the power.