Waterproof Ultrasonic Obstacle Sensor, Reversing Radar Sensor with Separate Probe

(3 customer reviews)

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Approx Restocking Date: 25 to 30 Days
SKU: 84338


  1. Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions
  2. Small size, easy to use
  3. Operating Voltage: 5 V
  4. Sonar Sensing Range: 25-450 cm
  5. Max. Sensing Range: 450 cm
  6. Frequency: 40 KHz


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Category: Other Ultrasonic Sensors
Tags: HC-SR04, Waterproof Ultrasonic, Distance sensor, Ultrasonic

This ultrasonic sensor is very similar to the ultrasonic sensors which are found in cars. This Waterproof Ultrasonic Obstacle Sensor shows some important constructional advantages over the conventional sensors. It comes in two separate parts one being the transducer which is the sensing element and the other being the control board.

The module is capable of providing information of the objects between the distance range of 250 mm to 4500 mm. The great advantage of using this Waterproof Ultrasonic Obstacle Sensor is you can put the sensing element far away from all the control circuitry.

This Ultrasonic Distance Sensor is an industrial-grade sensor to measure distance. Interfacing with it is the same as another cheap ultrasonic sensor, but it offers better performance and is compatible with harsher environments and is waterproof too! It can be easily interfaced with Arduino and Sample codes and projects are available.

There are many ultrasonic distance sensors on the market, but sometimes, this kind of sensor needs to work in vulnerable conditions. This Waterproof Ultrasonic Obstacle Sensor meets this requirement. It has a good performance and almost the same usage of an HC-SR04 module.

It is very easy to use, a control port with a 10US above high level can wait for high-level output at the receiving port. An output can drive the timer when this port is low can read the timer value, this time for the location of the time can be distance measurement. Constantly cycle tests that can achieve the measurement of the value of your mobile.

The basic working principle:
  1. Turn on TRIG Pin to 5V for at least 10uS
  2. The module will then automatically send 8 40KHz tones and automatically detect when the signal return after reflecting back from the object
  3. Upon detecting the signal, a high-level signal is outputted through the IO Pin ECHO. By keeping track of the time duration between transmitting and receiving the signal, the distance can be calculated. Distance = (Time to Receive Reflected Signal * speed of sound (340M/S)) /2






Application :
  1. Horizontal distance
  2. Obstacle avoidance, automatic control
  3. Traffic control
  4. Security, industrial control
  5. Artificial intelligence, and research.


  1. Small size, easy to use.
  2. Low voltage, low power consumption.
  3. High accuracy.
  4. Strong anti-jamming.
  5. Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions.

Package Includes :

1 x Waterproof Ultrasonic Obstacle Sensor, with 2.5m Separate Probe.

Useful Link :

Interfacing of waterproof ultrasonic sensor with Arduino

Operating voltage (v)


Operating Current (mA)


Static Current (mA)


Operating Range

25cm ~ 4.5m


0.5 cm

Detecting Angle

< 70°

Operating Temperature (℃)

-10 ~ +70

Cable Length

2.5 meter

Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.055 kg
Shipping Dimensions 10 × 6 × 5 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 3 reviews

4.7 overall

Add a review

  1. vivekpg.su (verified owner)

    Good, was well packed!
    pcb is JSN-SR04T V3.0
    and the wire is 2.5m long


  2. PRIYESH PV (verified owner)

    Works very good so far. Made a solar wireless water level controller for my over head water tank.


  3. Swapan Sarkar (verified owner)

    Good product

    Swapan Sarkar



Ultrasonic Sensor Working Principle

In this blog, we will learn about the ultrasonic...

Questions and answers of the customers

    can you share IP ratings for this waterproof senso... Read more
  1. 0 votes
    Q can you share IP ratings for this waterproof sensor? answer now
    Asked by vaibhavjadhav231197 on November 30, 2022 3:25 pm

    It has an IP rating of IP67, it indicate that t... Read more

  2. what will be its price if i purchse it in bulk app... Read more
  3. 0 votes
    Q what will be its price if i purchse it in bulk approx 100 unit answer now
    Asked by rameshid40 on November 18, 2019 8:01 pm

    Hello, for knowing the exact price please conta... Read more

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Country Of Origin: China

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