Aluminum Waterproof Ultrasonic Transducer 40 kHz 110dB 20Vrms Max.
Transmitting Sound Pressure Level
1Khz ±20% 2400 pF
Max. Driving Voltage (cont.)
Total Beam Angle
-6dB 30° typical
-35 to 80°C
-35 to 80°C
Ultrasonic sensor is designed by ultrasonic
characteristics.Ultrasonic is a kind of mechanical wave which
vibration frequency is higher than the sound wave. It has high
frequency and short wavelength, especially the good direction,
Which can transmit to the specified direction and
location.Ultrasonic sensors can used in gas, Liquid and solid.
Ultrasonic has the big ability to penetrate liquid and
solid.Especially in the sunshine opaque solid, it can penetrate
tens meters depth.Ultrasonic sensors are widely used in car parking
assistance, proximity alarms,Medical ultrasounds, and distance
What is an Ultrasonic Sensor?
An Ultrasonic sensor can measure the distance to an object by using
sound waves. It measures distance by sending out a sound wave at a
specific frequency and listening for sound wave to bounce back.
Recording the elapsed time between the sound wave being generated
and the sound wave bouncing back, it is possible to calculate the
distance between the sonar sensor and the object.
It’s important to understand that some objects might not be
detected by ultrasonic sensors. Because some objects are shaped or
positioned in such a way that the sound wave bounces off the
object, but are deflected away from the Ultrasonic sensor. It is
also possible for the object to be too small to reflect enough of
the sound wave back to the sensor to be detected. Other objects can
absorb the sound wave all together,which means that there’s no way
for the sensor to detect them accurately. These’re important
factors to consider when designing and programming a robot using an
As the name indicates, ultrasonic sensors measure distance by using
The sensor head emits an ultrasonic wave and receives the wave
reflected back from the target. Ultrasonic Sensors measure the
distance to the target by measuring the time between the emission
An optical sensor has a transmitter and receiver, whereas an
ultrasonic sensor uses a single ultrasonic element for both
emission and reception. In a reflective model ultrasonic sensor, a
single oscillator emits and receives ultrasonic waves alternately.
This enables miniaturization of the sensor head.