The WVR Series sensors are a cost effective answer to retrofitting classrooms with inaccessible ceilings. Additionally, these self contained line voltage sensors do not require neutral, meaning the sensor can wire directly off local switches. Features Finish: White Type: Wide View Sensor Poles: 1 Pole 100% Digital PIR Detection, Excellent RF Immunity 120º by 40 ft (12.19 m) Coverage for Small Motion Patented Dual Technology with PIR/Microphonics??Detection Interchangeable Hot & Load Wires -Impossible to Wire Backwards No Neutral Required / No Minimum Load Compatible w/ Electronic & Magnetic Ballasts, CFLs, & Incandescents Adjustable Time Delay Push-Button Programmable Non-Volatile Settings Memory Dimensions Width: 3.6" Height: 3" Depth: 1.75" Warranty 5-Year Limited Warranty Document Spec Sheet Instruction Sheet Labels