... meters , switch be in “Auto” position on sensor , It be triggered and switch on LEDS automatically ,when people not ... LUX , LEDS keep on.1 Adjustable brightness ( from bright to dark) 2 Auto switching on when a person is ... . B.When switch is turned to position"AUTO",human move close to within 5-8m of ... reservoir,warehouse,material section or used in someplace without 220v AC current. 10.it is suitable for ...