Speco N4NS User Manual page 38

SENSOR Select the sensor setting for the selected channel.
RECORDING
PRE RECORD Enable/disable pre-event recording. Pre-event recording time is up to 20 minutes.
POST EVENT Set the post event recording time duration for the specified channel.
RECORD (10~30 seconds)
AUDIO Enable/disable audio recording for the specified channel.
SCHEDULE Set the recording schedule.
38