OUR HIGH BAY FIXTURES HAVE A BUILT-IN REMOTE CONTROL FUNCTION ALLOWING THE FIXTURES TO BE RAISED AND LOWERED BY A  REMOTE CONTROL TRANSMITTER THAT OPERATES FROM UP TO 50 FEET AWAY.  THIS FEATURE MAKES IT SIMPLE TO  ADJUST FIXTURE  HEIGHT  FOR SPECIFIC TASKS AND MAKES CHANGING LAMPS EASY - NO LIFTS NECESSARY!