When the DeltaPoint Pro integrated Motion Sensor Technology (MST) senses motion, it turns on. When it is still 10 minutes, which puts the sight into a battery standby mode. The DeltaPoint has a manual mode as well where you press the switch on once, it turns on and it turns off once you press it again.

In addition to the auto-brightness sensor which relies on ambient light conditions so you can also manually set the intensity you want via pressing the button as there are 5 grades of brightness.