A02YYUW Waterproof Ultrasonic Sensor – IP67, 3–450cm, UART

The A02YYUW Waterproof Ultrasonic Sensor is a high-performance ranging module designed for precise distance measurement in harsh or humid environments. Rated IP67, it provides a detection range of 3–450 cm with a 3 cm blind spot and ±1 cm measurement accuracy. The sensor operates at 3.3–5 V with an average current ? 8 mA and features a UART serial interface for straightforward integration. Its 100 ms response time and 60° reference angle make it suitable for applications such as water tank level monitoring, automated plant watering, smart trash bins, and other DIY or embedded projects compatible with Arduino, ESP32, and Raspberry Pi platforms.

Features

Waterproof Rating: IP67 protection for reliable operation in wet or humid environments.

Detection Range: Measures distances from 3 cm to 450 cm with ±1 cm accuracy.

Blind Spot Distance: Minimal 3 cm non-detectable zone for close-range sensing.

Interface: UART serial output for straightforward communication with microcontrollers.

Operating Voltage: 3.3–5 V DC with average current ? 8 mA.

Response Time: 100 ms for rapid distance measurement and updates.

Reference Angle: 60° detection cone for directional sensing applications.

Compatibility: Integrates with Arduino, ESP32, Raspberry Pi, and ESPHome platforms.

Specification

Sensor Type | A02YYUW Waterproof Ultrasonic Distance Sensor

Waterproof Rating | IP67

Detection Range | 3–450 cm

Blind Spot | 3 cm

Measurement Accuracy | ±1 cm

Reference Angle | 60°

Interface | UART Serial Port

Operating Voltage | 3.3–5 V DC

Average Current | ? 8 mA

Response Time | 100 ms

Operating Temperature | ?15 °C to +60 °C

Compatibility | Arduino, ESP32, Raspberry Pi, ESPHome

Application | Level measurement, obstacle detection, automated systems

Links

- 3D model on grabcad.com

Product Wiki & User Manual

Timing Diagram

Tutorials

- Home Assistant Integration Guide

- Interfacing A02YYUW-1AT Ultrasonic Sensor With Arduino Uno
Introduction

- Waterproof Ultrasonic Sensor Grove Module Tutorial