4.8-5.5V 40KHZ 4 Pins Ultrasonic Sensor HC-SR04 Blue- Buy Online in Andorra at andorra.desertcart.com. ProductId : 6792891.
1pc Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor + Mount Bracket with 4pcs Mounting Screws: Amazon.com: Industrial & Scientific
Amazon.com: WYPH Ultrasonic Module HC-SR04 Distance Measuring Ranging Sensor for Arduino UNO for Mega R3 for Mega2560 Duemilanove Nano Robot Pack of 10pcs: Home Audio & Theater