e
) “
”
˖
ground.
2.4.1
Instructions
a
b
out
alarm
input
end
:
D1
and
HD1
series
:
1
ǃ
ǃ
ǃ
ǃ
A
larm input
:
g
8
channel
voltage
alarm
inputs
(B
oth
N
ormal
open
and
N
ormal
close
t
y
pe
)
g
Please
short
connect
b
etween
C
O
M
end
and
+
12v
end.
(
The
power
of
the
alarm
detector
should
b
e
provided
by
outside
power
,
the
DVR
afford
9SRZHU
, b
ut
if
it
provides
power
for
more
than
two
alarm
detectors
,
it
ma
y
affect
the
normal
wor
k
ing
of
the
DVR.
)
.
g
Please
parallel
connect
the
Ground
of
the
DVR
with
the
ground
of
the
alarm
detector
g
Please
connect
the
N
C
port
of
the
alarm
sensor
to
the
DVR
alarm
input
(ALA
RM
)
g
If
y
ou
need
to
restore
the
touched
-
off
alarm
remotel
y, y
ou
have
to
suppl
y
the
controlla
b
le
12
V
power
of
the
DVR
to
the
alarm
detector
,
such
as
the
smo
k
e
detector.
2.4.2
Instructions
a
b
out
alarm
output
end
:
2
wa
y
s
rela
y
alarm
output
(
normal
open
contacts
)
.
Should
provide
the
power
suppl
y
to
the
alarm
detector.
To
avoid
over
loading
,
please
read
carefull
y
a
b
out
the
related
parameters
of
the
rela
y
.
(
See
b
elow
ta
b
le
)
The
controlla
b
le
+
12v
can
provide
the
power
for
restora
b
le
smo
k
e
detector.
2.4.
3
Rela
y
s
’
parameter of the alarm output end
Model
: B3
G
A
Material
of
the
contacts
Sliver
Rated
switch
capacit
y 30
VDC
1
A,
12
5
V
A
C
0
.
5A
Maximum
switch
power
62.
5
V
A 33W
Maximum
switch
voltage
12
5
V
A
C
,
11
0
VDC
Rating
˄
resistance
load
˅
Maximum
switch
electric
currenc
y
1
A
B
etween
touches
with
same
polarit
y
1
000
V
A
C
1minute
50
/6
0
H
z
Insulation
B
etween
touches
with
different
polarit
y
1
000
V
A
C
1minute
50
/6
0
H
z
Page 18 of 52
Blue Box User Guide
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