Q-See QSW8209 - Manual (Page 7)

2. Press the channel button on the receiver to select the same channel as the
camera. When the channels match the picture will be displayed on the screen.
4-1-3. Camera alarm setup
1. The camera provides Motion Detection and Sound Detection. For each mode
you can select 3 sensitivity levels: Low, Middle, High.
Motion Alarm Setup:
This alarm will detect movement in front of the camera. If you slide the alarm
setting switch to the Motion position and select the Sensitivity level, the system
enters motion alarm mode. When movement is detected, the alarm sounds until