Lutron MS-OPS6M2U-DV-WH Maestro Switch with Occupancy / Vacancy Sensor

To power the sensing circuit, occupancy sensing switches require a small flow of current when the load is in the OFF state. This can be accomplished by connecting the power supply return wire to ground or to neutral. Local codes in certain municipalities require that a neutral conductor be run to the switch box, regardless of construction.
In one particular instance, installing occupancy sensors that use the ground wire to function is not permitted.
The MS-OPS6M2U-DV and MS-VPS6M2U products allow the installer to configure the device to connect to either ground or neutral.
To connect to ground, simply install the product in its "out-of-the box" condition.
To connect to neutral, install the supplied white sleeve over the green wire. For more information about occupancy sensing switches and the National Electrical code

FEATURES:

Passive infrared sensors with exclusive Lutrone XCTM Technology for fine motion detection
180° sensor field-of-view
Up to 30 ft x 30 ft (9 mx 9 m) (900 ft (81 m2] major motion coverage and 20 ft x 20 ft (6 mx 6 m) (400 ft (36 m2] minor motion coverage
Occupancy version can be set to Auto-ON/Auto-OFF or Manual-ON/Auto-OFF
Vacancy version available to meet CA Title 24 requirements
Adjustable timeout(1, 5, 15, or 30 minutes) and high/low sensitivity adjustment
Occupancy sensing switch loads: incandescent, halogen, ELV, MLV, CFL, LED, magnetic fluorescent, electronic fluorescent, and fan.