Main Features:<br />Working voltage: DC 3~5V <br />Main chip: LM393<br />Shot-infrared head with signal output indicator <br />Single signal output Sensitivity is not adjustable <br />Suitable for workpiece counting? motor speed measurement<br /><br />    Specifications<br />General<br />	 Model: K1208040                                                  <br />                        Material: PCB board + electric component                                                	<br />Weight and Size<br />	 Product Weight: 0.005 kg                                                  <br />                        Package Weight: 0.05 kg                                                  <br />                        Product Size(L x W x H): 3.1 x 2 x 1.8 cm / 1.2 x 0.8 x 0.7 inches                                                  <br />                        Package Size(L x W x H): 8 x 3.5 x 3 cm                                                	<br />Package Contents<br />	 Package Contents: 1 x LM393 Infrared Speed Sensor Module                                                	<br /><br /><br /><br />                                                <br />