ZHAOYAO HC-SR04 5PCS Ultrasonic Ranging Sensor Modules - Black + Silver

1. The module has stable performance and accurate measurement distance. Can be compared with foreign SRF05, SRF02 and other ultrasonic ranging module. High-precision module, blind area (2cm) super-close, stable distance measurement is a strong basis for the success of this product to the market!2 main technical parameters:        1: Use voltage: DC5V 2: Quiescent current: Less than 2mA        3: level output: high 5V 4: level output: bottom 0V        5: Sensing angle: not more than 15 degrees 6: Detecting distance: 2cm-450cm 7: High precision up to 0.2cmWiring mode, VCC, trig (control side), echo (receiver side), GND3 module working principle:  (1) Use IO trigger ranging to give a high level signal of at least 10us;      (2) The module automatically sends 8 square waves of 40khz to automatically detect whether there is a signal return;(3) There is a signal return, through the IO output a high level, the duration of the high level is         Ultrasound from launch to return time. Test distance = (high time * speed of sound (340M/S))/2;This module can provide a full range of ranging programs: C51, PIC18F877, ultrasonic LCD1602 display, ultrasonic LCD12864 display, digital display, serial display, ranging reference program. The main technical parameters:1. Use voltage: DC5V 2. Quiescent current: less than 2mA3: level output: high 5V 4: level output: low 0V5: Sensing angle: not more than 15 degrees 6: Detecting distance: 2cm-450cm 7: High precision: up to 3mmWiring method, VCC, trig (control side), echo (receiver side), GND groundThe use of this product: a control port sends a high level of more than 10US, you can wait for a high output at the receiving port.The output can be turned on by the timer. When this port goes low, the value of the timer can be read. This time is the time of this range measurement.Can calculate the distance. Such continuous cycle test, you can reach the value of your mobile measurement ~ ~Module working principle:(1) Use IO trigger ranging to give a high level signal of at least 10us;(2) The module automatically sends 8 square waves of 40khz to automatically detect whether there is a signal return;(3) There is a signal return, through the IO output a high level, the duration of the high level isUltrasound from launch to return time. Test distance = (high time * speed of sound (340M/S))/2GeneralBrandZHAOYAOQuantity1 setMaterialElectronic componentSpecificationEnglish Manual / SpecNoOther FeaturesCertification-Packing List5 x ModulesPackage Weight:0.055kg (0.121lb)Package Size:5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)