DT Motion Detectors unum include two motion sensing systems: microwave Doppler motion sensing and PIR motion sensing. Together, the two systems’ signals are evaluated by proprietary signal processing algorithms, which reject false alarm conditions while detecting intruders. The DT Motion Detector unum microwave system includes a modern, compact, DRO-based micro-strip Doppler transceiver, with PCB “patch” antennas. The Doppler signal is digitally processed to detect intruders and reject distractions. Constantmotion signals (such as fans) are deemphasized, and fluorescent light frequencies are digitally removed. The PIR side starts with a Even Eye lens and a top-quality infrared detector. Next, a modern DSP ASIC (patent-pending) converts the infrared detector signal into digital form, for best reliability and stability. Finally, the signal is evaluated by the ASIC’s HighBar processor, for “bestin-class” false alarm rejection with excellent intruder detection. The DT-PI unum series join the advantages of the Dual-Technology described above and Pet Immunity. The best Technology to server the customer. The DT-PI detectors should be mounted so that pets will occupy only the lighter-colored spaces.