Certain recent production sights have an updated motion sensor and new options for the auto sleep mode.

The default sleep timer setting is 10 min, but can be adjusted
1) Press and hold the “+” button for 10 seconds to enter time adjustment mode. There are 4 options: 10 min, 1h, 12h or the sleep mode is disabled.
2) Press and release either “+” or “-” button to set the time. The LED will blink (1=10 min,2=1h, 3=12h, or4=disable sleep mode.
3) Press the “+” and “-” buttons simultaneously to save the time setting and power off the sight