Ultrasonic is a low cost sensor. it is used for distance measurement. Its working principle is similar to that of SONAR(Sound Navigation and Ranging). The sensor provides precise,Stable non-contact distance measurements from about 2cm to 4 meters with very high accuracy. It can be used for level detection, speed and relative distances, burglar alarms etc.
Features:
Professional EMI/RFI Complaint PCB Layout Design for Noise Reduction
Range: 2 cm to 4 m
Accurate and Stable range data
Data loss in Error zone eliminated
Modulation at 40 KHz
Mounting holes provided on the circuit board
Triggered externally by supplying a pulse to the signal pin
5V DC Supply voltage
Current - <20mA
Bidirectional TTL pulse interface on a single I/O pin can communicate with 5 V TTL or 3.3V CMOS microcontrollers
Echo pulse: positive TTL pulse, 87 µs minimum to 30 ms maximum(PWM)
On Board Burst LED Indicatorshows measurement in progress
3-pin header makes it easy to connect using a servo extension cable, no soldering required
