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PCB CONNECTION 

 
 
TERMINAL BLOCK DEFINITION 

 

Pin Name 

AC24V Set 

DC12V Set 

VG 

AC24V in : line2 

DC12V in : GND 

V_IN 

AC24V in : line1 

DC12V in : +12V 

12V 

DC12V output : +12V    ( For Keyboard ; Max.400mA ) 

GND 

DC12V output Ground and Alarm Ground. 

Alarm 1 

Alarm 2 

Alarm 3 

Alarm 4 

D+ 

RS-485 Differential Signal D+ ( Tx +) 

D- 

RS-485 Differential Signal D- ( Tx - ) 

D+ 

Additional RS-485 Differential Signal D+ ( Tx +) 

D- 

Additional RS-485 Differential Signal D- ( Tx - ) 

Remark : 
1. Half-duplex mode is standard.   
2. D+,D- are used to transmit and received commands. You need only two wires to 

transmit and receive commands under half-duplex mode. 

 

 

 

1. BNC Video Output 

You can connect video
cable to monitor directly. 
 

2. Terminal Block   

Power, Control Signal
and alarm inputs. 

 

3. 16 Pin Connector   

Connect cable to dome 
camera 
 

4. 16 Pin Connector 

Connect cable to external 
box ( Optional ) 

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