HC-SR04 Ultrasonic Sensor Distance Measuring Module for Arduino

This is ultrasonic sensor distance measuring module which a non-contact distance measurement module. It has high measurement accuracy and its blind area is close (up to 2cm).Features:- Compatible with Arduino, NodeMCU- Arduino library ready: HCSR04Ultrasonic- Working voltage: 3-5.5VDC- Static current: less than 2 mA.- IO logic voltage: 3.3V / 5V.- Induction angle: not more than 15 degrees.- Detection range: 2-400 cm.- Accuracy: 3mm- Adopt IO trigger through supplying at least 10us sequence of high level signal- The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal- If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving.GeneralBrandOPEN-SMARTModelN/AQuantity1 pieceForm ColorBlue + WhiteMaterialPCB + AlloySpecificationApplicationDistance MeasuringWorking Voltage3~5.5VWorking Current2mAEnglish Manual / SpecYesDownload Linkhttp://pan.baidu.com/s/1jG0cozsPacking List1 x Ultrasonic Range Sensor module1 x English user manualPacking List:1 x Ultrasonic Range Sensor module1 x English user manualPackage Weight:0.017kg (0.037lb)Package Size:6.5cm x 4cm x 3cm (2.36in x 1.57in x 1.18in)