Waterproof Ultrasonic Distance Sensor Module AJ-SR04M-V2 Upgraded Version of JSN-SR04T

₹649.00 ₹ 550 + 99 GST
In stock

This is an industrial grade waterproof sensor to measure distance. Interfacing with it is same as other ultrasonic sensors, but it offers better performance and can be used in harsher environments and is waterproof too! It can be easily interfaced with Arduino and Sample codes and projects are available.

Note: This sensor is fully tested with Arduino and ESP32. You can check our blog post for more details - Ultrasonic Sensor Tutorial

This is the upgraded version of JSN-SR04T and JSN-SR04T-V2. It has 5 operating modes - Basic Trigger/Echo, Serial and PWM outputs with low power consumption modes.

Electrical Specifications

The module is capable of providing information of the objects between the distance range of 25 cm to 450 cm. The great advantage of using this Waterproof Ultrasonic Obstacle Sensor is you can put the sensing element far away from all the control circuitry.

  • Operating voltage: DC 5V
  • Quiescent current: 5mA
  • Total current draw: 30mA
  • Frequency: 40khz
  • Range: 25cm to 450cm
  • Resolution: about 0.5cm
  • Beam Angle: less than 50 degrees
  • Working temperature: -10 ~ 70 Celsuis
  • Storage temperature: -20 ~ 80 Celsuis

Product Features

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


  • Horizontal distance
  • Obstacle avoidance, automatic control
  • Traffic control
  • Security, industrial control
  • Artificial intelligence, and research

The basic working principle

  • Turn on TRIG Pin to 5V for atleast 10uS
  • The module will then automatically send 8 40KHz tones and automatically detect when the signal return after reflecting back from the object
  • On detecting the signal, a high level signal is outputed 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
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