A fully waterproof ultrasonic ranging sensor featuring a 30–500 cm detection range, ±(1 + S*0.5%) accuracy, 60° measuring angle, and built-in temperature compensation for reliable readings in changing weather conditions. The sensor supports a wide 3.3–5V operating voltage, offers stable 40 kHz ultrasonic performance with 3 mm resolution, and maintains low power consumption for continuous outdoor use. With multiple output modes and a sealed probe design, it is well-suited for obstacle detection, proximity sensing, robotic perception, traffic monitoring, scientific experiments, and industrial automation applications.

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Tech Specs

1. Distance Measurement – Mode 0

This project demonstrates how to use the Waterproof Ultrasonic Sensor in Mode 0 (PWM pulse-width output) to measure distance.

2. Distance Measurement – Mode 1

This project demonstrates how to use the Waterproof Ultrasonic Sensor in Mode 1 (UART automatic output) to measure distance.

3. Distance Measurement – Mode 2

This project demonstrates how to use the Waterproof Ultrasonic Sensor in Mode 2 (UART controlled output) to measure distance.

4. Distance Measurement – Mode 3

This project demonstrates how to use the Waterproof Ultrasonic Sensor in Mode 3 (switch output).

Parameter	Value
Working voltage	DC3.3-5V
Detection range	30cm~500cm
Accuracy	±(1+S*0.5%)
Measuring angle	60°
Static current	8mA
Working current	40mA
Working frequency	40KHz
Resolution	3mm
Temperature compensation	Yes
Working temperature	-20 ~ 70°C
PCB Size	42 x29 x12 mm

LABEL	NAME	FUNCTION
1	5V	Power Input +
2	Trig/RX	Signal control terminal / serial port input
3	Echo/TX	Signal receiving terminal/serial port output
4	GND	GND

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Waterproof Ultrasonic Distance Ranging Sensor

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