The Lutron Wireless Ceiling Sensor Occupancy Vacancy Radio Powr Savr LRF3-OCR2B-P-WH is a white plastic sensor designed for ceilings. It features wireless operation, making it easy to install and use. Compatible with Lutron smart home systems, this sensor can detect occupancy and vacancy, helping you save power and energy. With its round shape and infrared smart home protocol, this sensor is suitable for use in home appliances and gardens, making it a convenient and efficient addition to any smart home setup.