Unit appear to have only been installed briefly or never fully installed. However, they were certainly wired up at some point. From our understanding, the customer purchased the switches but they were incompatible with their bulbs / fixtures. There are some marks to the switches and twisting to the wires. Lot of (3) switches. 

Technical Specifications

• Vacancy Dimmer Sensor Switch
• Sensing Technology Passive Infrared (PIR)
• Operating Voltage 120 to 277V AC
• Vacancy & Photocell
• Lighting Fluorescent & LED
• Maximum Coverage Area 900 sq ft
• Number of Buttons 3
• Neutral Required No
• Color White
• Hard Wired
• Coverage Angle 180°
• Fan Rated
• Wall Plate Not Included
• 0 to 10V DC Continuous Dimming
• Horsepower Rating 3/16 hp
• Maximum Detection Distance 30 ft
• Maximum Mounting Height 4 ft
• Minimum Time Delay 1 min
• Maximum Time Delay 30 min
• Minimum Coverage Area 400 sq ft
• Series Maestro
• Standards Title 20/24 Compliant; UL Listed

MSRP: $370.98