Home Security System User Manual
37X Speed Dome Camera  17/50
 Video 
z Use BNC coaxial cable only. 
 Alarm Input 
Before connecting sensors, check driving voltages and output signal types of the sensors. 
Since output signal types of the sensors are divided into Open Collector type and 
Voltage Output type in general, the wiring must be done properly after considering 
those types. 
Signal  Description 
IN COM+  The electric power source to drive input circuit. Connect the (+) wire of electric 
power source to drive the Sensors to this port as shown in the above circuit. 
IN1 -, IN2 -, IN3 -  Connect the outputs of sensors to each port as shown in the above 
circuit. 
If you want to use Alarm Input, the types of sensors must be selected in OSD menu. The 
sensor types are divided into Normal Open and Normal Close. If wrong sensor types are 
selected, alarms should be activated reversely to sensor inputs. 
~ Normal Open  Output Voltage is high state when sensor is activated 
~ Normal Close  Output Voltage is high state when sensor is not activated 
 Relay Output 
Internal
OUT 1
AC or DC
LOAD
The maximum loads are as follows. 
Power Type  DC Power  AC Power 
Maximum Load  MAX. 24VDC, 1A  MAX. 125VAC, 0.5A 
IN COM+
+5V~12V
IN 1-
IN 3-
+
+
-
-
+
-
Internal
Sensor 1
Sensor 3
INSTALLATION 2 










