![HC-SR04 Ultrasonic Sensor Distance Measuring Module [HC-SR04] - US $2.20 : HAOYU Electronics : Make Engineers Job Easier HC-SR04 Ultrasonic Sensor Distance Measuring Module [HC-SR04] - US $2.20 : HAOYU Electronics : Make Engineers Job Easier](http://www.haoyuelectronics.com/Attachment/Sensor_ObjDec_Ultra_HC_SR04/Sensor_ObjDec_Ultra_HC_SR04_1.jpg)
HC-SR04 Ultrasonic Sensor Distance Measuring Module [HC-SR04] - US $2.20 : HAOYU Electronics : Make Engineers Job Easier
![JESSINIE JSN-SR20-Y1 Ultrasonic Distance Measurement Sensor Module Range 2-500 cm Waterproof and Dustproof Equipped with Twin Wire Probes: Amazon.de: Business, Industry & Science JESSINIE JSN-SR20-Y1 Ultrasonic Distance Measurement Sensor Module Range 2-500 cm Waterproof and Dustproof Equipped with Twin Wire Probes: Amazon.de: Business, Industry & Science](https://m.media-amazon.com/images/I/61-0xFM80NL.jpg)
JESSINIE JSN-SR20-Y1 Ultrasonic Distance Measurement Sensor Module Range 2-500 cm Waterproof and Dustproof Equipped with Twin Wire Probes: Amazon.de: Business, Industry & Science
![Choosing an Ultrasonic Sensor for Proximity or Distance Measurement -- Part 1: Acoustic Considerations | Fierce Electronics Choosing an Ultrasonic Sensor for Proximity or Distance Measurement -- Part 1: Acoustic Considerations | Fierce Electronics](https://qtxasset.com/cdn-cgi/image/w=384,h=216,f=auto,fit=crop,g=0.5x0.5/https://qtxasset.com/quartz/qcloud4/media/image/sensorsmag/1556301747/HERO_1.jpg/HERO_1.jpg?VersionId=B2oziyxYGX4k9n8hvmhu1s9cyJ2OB1YI)
Choosing an Ultrasonic Sensor for Proximity or Distance Measurement -- Part 1: Acoustic Considerations | Fierce Electronics
![Distance Measurement using Ultrasonic Sensor and Arduino - DIY Project with Circuit Diagram & Code – QuartzComponents Distance Measurement using Ultrasonic Sensor and Arduino - DIY Project with Circuit Diagram & Code – QuartzComponents](https://quartzcomponents.com/cdn/shop/articles/Distance-measurement-using-arduino-and-ultrasonic-sensor_800x.jpg?v=1579087406)