0
0
Working
Temperature................
-
20 C
～+
55 C
2
Wires
for
power.......................RVV2
×
0
.
5mm
Wires
from
Door
Camera
2
to
Monitor................................RVV4
×
0
.
5mm
≤
50m
2
RVV4
×
0
.
75mm
≤
75m
2
RVV4
×
1
.
0mm
≤
100m
Dimensions..............................165
×
230
×
50mm
6
.
Accessories
180mm
two-wire connector..........1 pcs
180mm four-wire connector..........1 pcs
User’s manual.............................1 pcs
7
.
Trouble
shooting
T r o u b l e s
S o l u t i o n s
Check if the power wiring is connected
properly.
Check the wiring if connected well.
Check
unlocking
wires to see if is
is the wires recommended.
Check
if
the wiring between Monitor 1
and Monitor 2 is connected properly.
Adjust the volume adjustment to the
proper level.
There is no sound and no
display in the monitor.
When there is call from the
Door Station, there is no ring
tone and no display in the
monitor.
There is no sound or Sound
is too low.
M o n i t o r
c a n
n o t
u n l o c k
t h e
d o o r
.
M o n i t o r
1
c a n
t a l k t o
t h e
f r o n t
d o o r
c a m e r a , b u t
c a n ’ t t a l k t o M o n i t o r 2
.
DATA
GND
12V
VIDEO
+12V
GND
VID EO IN PUT
MATC H
1
2
3
4
5
6
7
8
DATA
GND
12V
VIDEO
+12V
GND
VID EO IN PUT
MATC H
1
2
3
4
5
6
7
8
DATA
GND
12V
VIDEO
+12V
GND
VIDEO INPUT
MATCH
1
2
3
4
5
6
7
8
L
+
L
-
v
o
lu
m
n
a
d
ju
s
t
s
ta
tu
s
c
h
o
o
s
in
g
A
U
G
N
D
+
1
2
V
V
ID
E
O
WRT
-
SD
power
e
-
lock
-
L+
LK+
LK-
+
EZH-121C-1
8. Wiring diagram
One
camera
can
connect
to max four monitors.
C2S-121B/C2S-121CS4
C2S-121B/C2S-121CS4
C2S-121B/C2S-121CS4
L
+
L
-
v
o
lu
m
e
a
d
ju
s
t
s
ta
tu
s
c
h
o
o
s
in
g
A
U
G
N
D
+
1
2
V
V
ID
E
O
power
e
-
lock
-
L+
LK+
LK-
+
One
camera
with
two monitors
EZH-121C-1
5
6
+12V
/1.2A
DC
+12V
/1.2A
DC
+12V
/1.2A
DC
WRT
-
SD
