Product Code: HC-SR04 Ultrasonic Sensor
Availability: In Stock
₹75.00
Product Description :
HC-SR04 ultrasonic ranging sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. This module includes an ultrasonic transmitter, a receiver and a control circuit.

There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground).

Specifications :

Working Voltage: DC 5V
Working Current: 15mA
Working Frequency: 40Hz
Max Range: 4m
Min Range: 2cm 
Measuring Angle: 15 degree 
Trigger Input Signal: 10uS TTL pulse
Echo Output Signal: Input TTL lever signal and the range in proportion 
Dimension: 45*20*15mm 

Blog  :
http://invent.module143.com/2016/06/22/beginner-level-application-using-ultrasonic-ping-sensor/

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