Available in both line- and low-voltage models, the UT-300, CI-300, and DT-300 series of occupancy sensors feature 360-degree coverage, advanced detection technology, and a low-profile design. The UT-300 incorporates ultrasonic sensing technology; the CI-300 employs passive infrared (PIR) technology for occupancy detection; the DT-300 relies on both ultrasonic and PIR technologies.