The ATD1600WRP is a dual-technology wall mount sensor that combines ultrasonic and passive infrared (PIR) sensing for reliable occupancy detection. It features a wide 110° coverage angle, sensing an area up to 1600 sq. ft. The sensor operates on a nominal 24V DC power supply, draws 33mA, and includes an isolated relay with both normally open and normally closed terminals. It also incorporates a photocell for ambient light control from 1 to 1000 foot candles and uses adaptive technology for an adjustable time delay from 8 to 40 minutes. Designed for 'install and forget' operation, this sensor is ideal for complete room sensing in commercial applications where energy efficiency and compliance with standards like CEC Title 24 are required.