Sharp Microelectronics Sharp GP2Y0A41SK0F Distance Measuring Sensor Unit Sharp GP2Y0A41SK0F Distance Measuring Sensor Unit is composed of an integrated position sensitive detector (PSD), infrared emitting diode (IR-LED) and signal processing circuit. The GP2Y0A41SK0F can be used as a proximity sensor and outputs the voltage corresponding to the detection distance. The distance measuring range is 4-30CM.