HC-SR04 Ultrasonic Sensor Module

Description

• Ultrasonic Ranging Detector Mod HC-SR04 Distance Sensor (Blue)
• HC-SR04 Arduino ultrasonic sensor can send eight 40 kHz and detect whether there is any pulse signal back.If it back, a high level signal will be outputed by IO, and the duration of the signal is the time from sending ultrasonic to returning.
• The modules includes ultrasonic transmitters, receiver and control circuit.
• There are 4 pins out of the module : VCC , Trig, Echo, GND. So it’s a very easy interface for controller to use it ranging.
• The sensor is small, easy to use in any robotics project and offers excellent non-contact range detection between 2 cm to 400 cm (that’s about an inch to 13 feet) with an accuracy of 3mm. Since it operates on 5 volts, it can be hooked directly to an Arduino or any other 5V logic microcontrollers.