Q-See QSD9004 - Chapter 4: DVR Boot up; 4.1 System Initialization; 4.2 Main Interface

User Manual
5
8
RS-485/Sensor/Alarm RS485/Sensor/Alarm interface (see pin outs below)
9 Power Port Connect power supply - DC12V 3A
List 2-2
2.2.2 8- Channel Rear Panel
1 CH1-8: Video inputs 6 USB port
2 Video Outputs 7 Mouse port
3 Audio Input 8 RS-485/Sensor / Alarm port
4 LAN: LAN port for Network Access 9 Power switch port
5 Audio Output
4-CH: RS485/Sensor/Alarm port functions
(from left to right):
Pin 1-2：PTZ Control port
Pin 1：RS-485A
Pin 2：RS-485B
Pin 3-4： Sensor 1 input
Pin 5-6： Sensor 2 input
Pin 7-8: Sensor 3 input
Pin 9-10：Sensor 4 input
Pin 11-12：Alarm Output
8-CH: RS485/Sensor/Alarm port functions
(from left to right):
Pin 1-2：PTZ Control port
Pin 1：RS-485A / Pin 2：RS-485B
Pin 3-4： Sensor 1 input
Pin 4-5： Sensor 2 input
Pin 6-7: Sensor 3 input
Pin 7-8：Sensor 4 input
Pin 9-10: Sensor 5 input
Pin 10-11: Sensor 6 input
Pin 12-13: Sensor 7 input
Pin 13-14: Sensor 8 input
Pin 15-16：Alarm Output