The Wattstopper PW-311-G is a 0-10V PIR dimming wall switch occupancy sensor rated for 120/277V operation, suited for commercial offices, classrooms, and conference rooms with dimmable 0-10V LED or fluorescent fixtures. In addition to automatic ON/OFF switching based on passive infrared occupancy detection, it provides user-adjustable dimming control via integrated raise/lower buttons. Grey finish for compatibility with standard Decora-style wallplates.