![Elegoo HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5 : Amazon.ca: Electronics Elegoo HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5 : Amazon.ca: Electronics](https://m.media-amazon.com/images/I/714Ep9LpwoL._AC_UF894,1000_QL80_.jpg)
Elegoo HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5 : Amazon.ca: Electronics
![Sensors | Free Full-Text | A Multi-Sensor Fusion Approach Based on PIR and Ultrasonic Sensors Installed on a Robot to Localise People in Indoor Environments Sensors | Free Full-Text | A Multi-Sensor Fusion Approach Based on PIR and Ultrasonic Sensors Installed on a Robot to Localise People in Indoor Environments](https://www.mdpi.com/sensors/sensors-23-06963/article_deploy/html/images/sensors-23-06963-g001.png)
Sensors | Free Full-Text | A Multi-Sensor Fusion Approach Based on PIR and Ultrasonic Sensors Installed on a Robot to Localise People in Indoor Environments
![Smraza Ultrasonic Sensor for Arduino, HC-SR04 Distance Sensors with 8pcs Mounting Bracket for Arduino R3 Compatible with MEGA2560 Nano Robot XBee ZigBee, Set of 8 S03-CN : Amazon.ca: Electronics Smraza Ultrasonic Sensor for Arduino, HC-SR04 Distance Sensors with 8pcs Mounting Bracket for Arduino R3 Compatible with MEGA2560 Nano Robot XBee ZigBee, Set of 8 S03-CN : Amazon.ca: Electronics](https://m.media-amazon.com/images/I/71q-OgiXKkL._AC_UF894,1000_QL80_.jpg)
Smraza Ultrasonic Sensor for Arduino, HC-SR04 Distance Sensors with 8pcs Mounting Bracket for Arduino R3 Compatible with MEGA2560 Nano Robot XBee ZigBee, Set of 8 S03-CN : Amazon.ca: Electronics
![5pcs HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO R3 MEGA 2560 - Rexqualis Industries,Ingenious & fun DIY electronics and kits 5pcs HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO R3 MEGA 2560 - Rexqualis Industries,Ingenious & fun DIY electronics and kits](https://www.rexqualis.com/wp-content/uploads/2017/08/Distance-Sensor-03.jpg)
5pcs HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO R3 MEGA 2560 - Rexqualis Industries,Ingenious & fun DIY electronics and kits
![Measuring Module Ranging Ultrasonic Distance Sensor for Obstacle Avoidance in Raspberry Pi or Arduino Projects Pack of 2 : Amazon.ca: Industrial & Scientific Measuring Module Ranging Ultrasonic Distance Sensor for Obstacle Avoidance in Raspberry Pi or Arduino Projects Pack of 2 : Amazon.ca: Industrial & Scientific](https://m.media-amazon.com/images/I/61Kv2vOsY9L._AC_UF894,1000_QL80_.jpg)
Measuring Module Ranging Ultrasonic Distance Sensor for Obstacle Avoidance in Raspberry Pi or Arduino Projects Pack of 2 : Amazon.ca: Industrial & Scientific
![HC-SR04 Ultrasonic Sonar Distance Sensor + 2 x 10K resistors : ID 3942 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits HC-SR04 Ultrasonic Sonar Distance Sensor + 2 x 10K resistors : ID 3942 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-learn.adafruit.com/guides/images/000/002/798/medium640thumb/HC-SR04_GIF.gif)