5pcs HHC-SR04 Ultrasonic Sensor Ultrasonic Sensor Distance Module + Ultrasonic Sensor Distance Display Module with - ShopVlot

【What it does】: the ultrasonic sensor sends ultrasonic waves through the head and receives the waves reflected by the target, thus measuring the time between transfer and reception to measure the distance to the target. 【Features】: Ultrasonic is a mechanical wave with a vibration frequency of more than 20 kHz. It has the properties of high frequency, short wavelength, small diffraction phenomenon and good direction, and can be converted into a beam for direction dispersion, etc. Product advantag