Q-See QSD6204 - Manual (Page 21)

6. Sensor Setup
Notice: You need to buy sensors separately to make sensored alarm recording
functions operate on your DVR system.
MOTION
SENSOR
RECORDING
SENSORED RECORD TIME
This indicates the length of recording time after the sensor’s last
detection of movement.
ALARM ON TIME
It indicates how long the alarm lasts after a sensor is triggered.
*SENSORED RECORD TIME and ALARM ON TIME are measured
in seconds.
HARDWARE SENSOR SETUP
It indicates the sub menu for setting up the external motion sensor
devices.
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