Songhe HC-SR04 Ultrasonic Sensor Module Distance Measuring Sensor Module for Arduino UNO MEGA2560 Nano (5pcs)
ELEGOO 5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee
AZDelivery Compatible with HC-SR04 Ultrasonic Rangefinder Sensor Module compatible with Arduino and Raspberry Pi including E-Book! : Amazon.co.uk: Computers & Accessories
ERH India (1 Pc) HC-SR04 Ultrasonic Sensor Distance Module for Arduino Uno and All Type of Devlopment Boards and Robots : Amazon.in: Industrial & Scientific