LightHawk, a wall-switch occupancy sensor product line, is available in a variety of models -- passive infrared, ultrasonic, and multi-technology -- for occupancy detection and false trip immunity. The devices feature selectable operating modes, including automatic on/off or manual on/automatic off, and a built-in photosensor for automatic daylight harvesting. All sensor models come in both single- and dual-circuit versions with no minimum load requirements and can be used to replace existing wall switches.