WATT STOPPER PW311LA Wattstopper Occupancy Sensor Multi Way, Wall Switch, Automatic On/Off 120 - 277 VAC,

Passive infrared (PIR) dimming wall switch occupancy sensor can turn lights OFF and ON based on occupancy and allow the user to increase or decrease the lighting level. It works with 0 to 10 VDC dimming drivers and ballasts to control lighting loads including LEDs. Neutral Sense™ and optional neutral wiring simplifies 2011 NEC-compliant installation. Vandal resistant lens combines precise coverage with durability. Presentation mode may be deactivated to allow Auto-ON operation after 15 second time delay. Optional Smart Light Level adapts ambient light hold off threshold to meet user needs. Selectable walk-through mode turns lights off three minutes after the room is initially occupied if no motion is detected after the first 30 seconds. Test mode allows quick and easy verification of coverage. Selectable audible and/or visual alerts for impending shutoff. LED indicates occupancy detection. Service mode allows sensor to operate as a service switch in the unlikely event of a failure. Zero-crossing for long relay life. No derating required for multi-gang applications. Sensor coverage tested to NEMA Guide Publication WD 7-2000. Compatible with decorator wall plates.