The Danlers CESF PIR Occupancy Switch is a ceiling surface mounted sensor designed for industrial automation and motion control systems. With the brand's reputation for quality and reliability, this occupancy switch is perfect for monitoring and controlling lighting or other systems based on occupancy levels in a commercial or industrial setting. The PIR sensor detects motion and changes in light levels to determine whether a space is occupied, providing energy savings and improved efficiency in a range of business, office, and industrial applications.