Ultrasonic Sensor Module (HCSR04)

Ultrasonic Sensor Module (HCSR04)
Ultrasonic Sensor Module (HCSR04)
Product Code: ULTRAHCSR04
Availability: In Stock
Price: Rs.350.0
With Tax: Rs.367.5

This is a low cost Ultrasonic Distance Sensor provides a non-contact distance measurement with a fine accuracy of 3mm. The module is capable of measuring distance from obstacles in range of 2 cm to 400 cm or 1" to 3 Ft. Unlike IR sensors, the performance of this sensor is no dependent on the sunlight or color of the object. The module comes in a compact form factor with a ultrasonic transmitter, receiver and signal conditioning circuit on-board.


●       Power Supply :+5V DC

●       Quiescent Current : <2mA

●       Working Current: 15mA

●       Effectual Angle: <15°

●       Ranging Distance : 2cm – 400 cm/1" - 13ft

●       Resolution : 0.3 cm

●       Measuring Angle: 30 degree

●       Trigger Input Pulse width: 10uS

●       Dimension: 45mm x 20mm x 15mm 

Working Principle

To start measurement, the Trig pin of SR04 must receive a pulse of high (5V) for at least 10us, this will initiate the sensor will transmit out 8 cycle of ultrasonic burst at 40kHz and wait for the reflected ultrasonic burst. When the sensor detected ultrasonic from receiver, it will set the Echo pin to high (5V) and delay for a period (width) which proportion to distance. To obtain the distance, measure the width (Ton) of Echo pin.


Time = Width of Echo pulse, in uS (micro second)

●       Distance in centimetres = Time / 58

●       Distance in inches = Time / 148

●       Or you can utilize the speed of sound, which is 340m/s



Note: Connect the GND pin first before supplying power to VCC and make sure the surface of object to be detected should have at least 0.5 meter2 for better performance.



Write a review

Your Name:

Your Review: Note: HTML is not translated!

Rating: Bad            Good

Enter the code in the box below: