Wiring Device-Kellems H-MOSS® ATD2000C Dual Technology Occupancy Sensor, 24 VDC, Passive Infrared/Ultrasonic Sensor, 2000 sq-ft Coverage, 360 deg Viewing, Ceiling Mounting

Dual technology occupancy sensors combine both passive infrared (PIR) and ultrasonic (US) technologies for maximum reliability. Because US and PIR need to both detect occupancy to turn lighting on, dual technology sensors minimize the risk of lights coming on when the space is unoccupied false triggering. Continued detection by only one technology then keeps lighting on as necessary. Dual technology sensors offer the best performance for most applications.