Outdoor/Indoor Waterproof Anti-masking Detector. * Two PIR sensors. Microwave sensor. Waterproof and all-weather resistant. Frontal Anti-masking, by active infrared. Anti-case-shifting, by inertial switch: Alerts when detector has been shifted. Microprocessor controlled. Selectable PIR detection sensitivity. Adjustable Microwave detection sensitivity. Selectable detection combination type (AND / OR). Memory latched input. Wide-angle (1100) field-of-view. Auto temperature compensation. High level of RFI/EMI immunity. Vertical adjustment.