Time Dial
Turn the dial clockwise to increase time duration.
Turn the dial anticlockwise to decrease time duration.
The Time Dial changes different durations depending on the program
selected. For example, it might be used to set the duration of a burst in Stills
mode or the video length in video mode. Refer to the relevant mode
documentation for further details.
Camtraptions PIR Motion Sensor v3 Manual
Page 15