The dual technology sensor's combination of ultrasonic and passive infrared technologies offers the most complete sensing equipment available today. MicroSet self-adjusting dual technology sensors drastically simplify and reduce a contractor's installation and adjustment time period. The MicroSet self-adjusting technology continuously monitors multiple sub-frequencies in the event that if a continuous Doppler shift occurs, such as those created by airflow from an air duct, the sensor will identify the noise as continuous and then block it out of view at a select sub-frequency. It will continue to monitor other subfrequencies for human motion. This avoids false-activation, while still maintaining the high level of sensitivity that is necessary for sensing minor motion in a changing environment. Separate concurrent time delays for both passive infrared and ultrasonic technologies avoid false activations or deactivations. In automatic On Mode, the lights turn on when a person enters the room. In manual on mode (-R model only), the lights are turned On by activating a momentary switch (model # GMDS-*) that is connected to the sensor. When enabled, the daylighting feature (-R models only) prevents lights from turning on when the room is adequately illuminated by natural light.