JSN-SR04T Waterproof Ultrasonic Distance Sensor

Original price was: ₵85.00.Current price is: ₵60.00.

49 in stock

The JSN-SR04T waterproof ultrasonic sensor measures distances from 20cm to 600cm with high accuracy, perfect for Arduino-based water level monitoring and outdoor applications.

Categories: modules, sensors

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Description

The JSN-SR04T Waterproof Ultrasonic Distance Sensor is a robust, non-contact distance measurement module designed for harsh and wet environments, offering a range of 20cm to 600cm with an accuracy of ±2mm under ideal conditions. Unlike the HC-SR04, which uses two transducers, the JSN-SR04T employs a single piezoelectric ultrasonic transducer (40kHz) that acts as both transmitter and receiver, connected via a 2.5m waterproof cable to a control board. Operating on 3.0–5.5V DC (5V typical for V2, 3.3–5V for V2.0/3.2), it draws ~30mA during active measurement and <5mA in standby, making it energy-efficient for IoT projects. The module features four pins: VCC (3.5–5.5V), GND, Trigger (20µs high pulse to initiate), and Echo (outputs a high pulse proportional to distance). It uses ultrasonic waves (340m/s speed of sound) to calculate distance, with a 75° detection cone, best suited for hard, reflective surfaces (e.g., water, metal) at least 0.5m² in size. The sensor is ideal for applications like water tank level monitoring, obstacle avoidance, parking sensors, and robotics, but struggles with soft or sound-absorbing materials (e.g., fabrics) and cannot operate underwater. The waterproof transducer (IP65-rated) withstands rain and humidity, or moisture, but the control board is not waterproof and must be protected. The JSN-SR04T supports multiple modes (default Mode 0 mimics HC-SR04), with V3.0 offering additional modes like UART output or low-power operation (70µA in Mode 4) via onboard resistor settings (e.g., soldering 47kΩ or 120kΩ resistors). Compatible with Arduino using libraries like NewPing, it requires a 20µs trigger pulse (vs. 10µs for HC-SR04) for stable readings. This RoHS-compliant sensor (control board ~50x25mm, transducer ~30mm diameter) is perfect for outdoor projects but may be less stable for small or moving targets compared to HC-SR04.