Waterproof Ultrasonic Distance Sensor Module (JSN-SR04T)

Overview

The Waterproof Ultrasonic Distance Sensor Module (JSN-SR04T) is a rugged, weatherproof sensor that delivers accurate non-contact distance measurements for outdoor and industrial applications. Built around proven ultrasonic ranging technology and housed in an IP67-rated enclosure, the JSN-SR04T is designed for use where moisture, dust, or harsh conditions are a concern.

How It Works

The module emits ultrasonic pulses and measures the time elapsed until the echo returns from a target object. Using the speed of sound, the JSN-SR04T converts this time delay into a distance measurement. This non-contact method makes it suitable for detecting solid objects, vehicles, and liquid surfaces without physical wear.

Key Features

• Waterproof Design (IP67): Fully sealed housing for consistent operation in rain, humidity, and dusty environments.
• Ultrasonic Distance Measurement: Reliable non-contact sensing across short and long ranges.
• Wide Measurement Range: Detects objects from a few centimeters up to several meters depending on model and conditions.
• High Accuracy: Stable, repeatable measurements with minimal error under normal conditions.
• Easy Integration: Simple GPIO interface, compatible with Arduino, Raspberry Pi, ESP32 and other microcontrollers.
• Compact and Mountable: Small footprint with mounting holes for secure installation.

Technical Specifications

• Model: JSN-SR04T
• Operating Voltage: Typically 5V DC (verify module variant before wiring)
• Output Interface: Digital pulse width echo output or serial/UART on some variants
• Measurement Angle: Wide-angle detection for broad coverage
• Measurement Range: From a few centimeters to several meters (range varies by environment and target)
• Ingress Protection: IP67 waterproof rating
• Dimensions: Compact module with mounting holes (check product drawing for exact dimensions)

Applications

• Robotics and Automation: Obstacle detection and avoidance for outdoor robots and autonomous vehicles.
• Liquid Level Monitoring: Tank and reservoir level sensing without contact with fluids.
• Smart Agriculture: Irrigation monitoring, crop height measurement, and field automation.
• Industrial Systems: Conveyor monitoring, height/position sensing, and material detection.
• Smart Cities: Parking guidance, traffic monitoring, and perimeter intrusion detection.

Integration Tips

• Use a stable 5V supply and common ground when connecting to microcontrollers.
• Allow a short warm-up period for stable readings in cold or rapidly changing temperatures.
• Mount the sensor perpendicular to the target surface for best accuracy; wide-angle characteristics can detect broader targets but reduce precise point measurements.
• If using long cables, add buffering or level shifting for robust signal integrity between the module and microcontroller.

Installation and Mounting

The JSN-SR04T features mounting holes for secure installation on flat surfaces or brackets. Ensure the ultrasonic face has a clear field of view free from obstructions and reflective surfaces that could create false echoes.

Safety and Compatibility Notes

• Verify the module variant and exact voltage requirements before wiring to avoid damage.
• Ultrasonic sensors may be affected by heavy rain, foam, or turbulent liquid surfaces; test in your target environment.
• Do not rely on a single sensor for critical safety systems without redundancy and validation.

Why Choose the JSN-SR04T?

With its IP67 waterproof housing, reliable ultrasonic ranging, and easy microcontroller compatibility, the JSN-SR04T is an excellent choice for outdoor IoT, industrial automation, and robotics projects that require accurate, durable distance sensing.

Note: Images are for illustration purposes only. Actual product design and specifications may vary. Verify compatibility and voltage requirements before installation.