24
c
Connect an external speaker with amplifier to
the audio output connector (for use of the audio
transmission function).
SF549
SF539
Connect a stereo mini plug (ø3.5 mm) (audio
output is monaural).
• Recommended cable length: 10 m
{33 feet} or less
v
Connect the cables of external devices to the
EXT I/O terminal plug (accessory).
q
When connecting an external device, remove
8 mm - 9 mm {5/16 inches - 11/32 inches} of
the outer jacket of the cable and twist the cable
core to prevent the short circuit first.
Specification of cable (wire):
20 AWG - 26 AWG, Single core, twisted
w
Push down the button of the desired terminal
on the external I/O terminal plug with a ballpoint
pen, and release the button when the cable of
the external device is fully inserted into the ter-
minal hole.
* Check whether the stripped part of the wire is
not exposed and is securely connected.
8 mm - 9 mm
{5/16 inches - 11/32 inches}
Strip range
4 3
2 1
External I/O terminal plug
(accessory)
Button
Audio output
connector
Specification of external I/O terminal plug (accessory)
SF549
SF539
1
2
3
4
ALARM IN3, AUX OUT
(Alarm input terminal 3, AUX output terminal)
GND
ALARM IN1, DAY/NIGHT IN
(Alarm input terminal 1, DAY/NIGHT input terminal)
ALARM IN2, ALARM OUT
(Alarm input terminal 2, Alarm output terminal)
Specification of external I/O terminal plug (accessory)
SF548
1
2
3
4
AUX OUT (AUX output terminal)
GND
ALARM IN (Alarm input terninal)
ALARM OUT (Alarm output terminal)
SF538
IMPORTANT:
• Connect/disconnect the audio cables and turn on the power of the camera after turning off the
power of the audio output devices. Otherwise, loud noise may be heard from the speaker.
