The HC-SR04 ultrasonic sensor uses sonar to calculate its distance from an object. It comes in an easy-to-use package and provides stable readings and excellent non-contact range detection with high accuracy. between 1″ and 13 feet, or 2 cm and 400 cm. Unlike Sharp rangefinders, it is not impacted by sunlight or dark materials when operating (though it may be challenging to detect acoustically soft materials like cloth). A receiver module and ultrasonic transmitter are included.
The HC-SR04 ultrasonic module acrylic transparent mounting bracket set is a set of smart car accessories for the SG90 steering gear.
As seen in the picture, four sets of screws
The HC-SR04 ultrasonic module and the SG90 servo are not included in this kit.
Mounting bracket for one SG90 HC-SR04