NM
‐
IP3500
11
5. CONNECTIONS
5.1.Connectors
Audio
In
/
Out
The
camera
has
a
mono
audio
input
and
a
mono
audio
output.
As
the
output
power
for
the
audio
is
low,
amplifier
speaker
is
needed
(Do
not
use
a
headphone
or
earphone
directly
to
the
camera).
Sensor
(DI)
connection
The
camera
provides
1
channel
D/I.
It
can
be
connected
to
either
a
voltage
type
sensor
or
a
relay
type
sensor
as
the
following
figures.
It
can
be
selected
by
software.
Input
voltage
range:
0
VDC
minimum
to
24
VDC
maximum
Input
voltage
threshold:
1
V
Caution
!
Do
not
exceed
the
maximum
input
voltage
or
relay
rate.
Aout
Ain
Mic
Amp
Speaker
