Waterproof Ultrasonic Sensor with Probe

Waterproof Ultrasonic Sensor with Probe The Waterproof Ultrasonic Sensor with Probe is a non-contact distance measurement module using ultrasonic waves. It offers reliable object detection and ranging for robotics, automation, and IoT projects. Key Features Non-contact distance measurement 2cm to 400cm range High accuracy (±3mm) Easy trigger/echo interface 5V operation Works with any microcontroller Technical Specifications Model: HC-SR04 Operating Voltage: 5V DC Measuring Range: 2cm – 400cm Resolution: 0.3cm Accuracy: ±3mm Measuring Angle: 15° Frequency: 40kHz Pinout VCC: 5V Power Trig: Trigger Input Echo: Echo Output GND: Ground Working Principle The module emits an ultrasonic burst when triggered. It measures the time taken for the echo to return after reflecting off an object, calculating distance based on the speed of sound. Applications Obstacle avoidance robots Liquid level monitoring Parking sensors Proximity detection Distance measurement tools Wiring Guide Connect VCC to 5V Connect GND to Ground Connect Trig to digital pin Connect Echo to digital pin