Description:<br />The module performance is stable， measure distance accurately. SRF05， SRF02 ultrasonic ranging module and abroad comparable.<br /><br /> Main Features:  <br />● Static Current: Less than 2mA<br />● Output Signal: Electric frequency signal， high level 5V， low level 0V<br />● Sensor Angle: Not more than 15 degrees<br />● Detection Distance: 2cm-450cm<br />● High Precision: Up to 0.3cm<br />● Input Trigger Signal: 10us TTL impulse<br />● Echo Signal: Output TTL PWL signal<br /><br />Frequently Asked Questions: <br />Q1. Why are these called "Arduino Compatible"? <br />A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino<br />Q2. Are these 100% compatible with the "normal" Arduino's? <br />A2. Yes， they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio， library， tools， etc) just works<br /><br />    Specifications<br />General<br />	 Model: HC-SR04                                                  <br />                        Type: Ultrasonic Distance measuring sensor module                                                	<br />Electronic Components<br />	 Architecture: Arduino                                                  <br />                        Input Voltage: 5V                                                  <br />                        Operating Voltage: 5V                                                  <br />                        PCB Size: 16 x 50mm                                                	<br />Weight and Size<br />	 Product Weight: 0.010 kg                                                  <br />                        Package Weight: 0.050 kg                                                  <br />                        Product Size(L x W x H): 5.0 x 1.6 x 1.4 cm / 2.0 x 0.6 x 0.6 inches                                                  <br />                        Package Size(L x W x H): 6.0 x 3.0 x 3.0 cm / 2.36 x 1.18 x 1.18 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x Distance Measuring Sensor Module                                                	<br /><br /><br /><br />                                                <br />