Ultrasonic Sensor Module (HC-SR04)

The Ultrasonic Sensor Module (HC-SR04) is a high-precision, non-contact distance measurement device that uses ultrasonic waves to measure the distance to an object. Ideal for robotics, automation, and IoT projects, it provides stable and accurate readings with a wide detection range and fast response time.

The sensor consists of two main parts: an ultrasonic transmitter and a receiver. It sends out a high-frequency sound wave and measures the time it takes for the echo to return, using this data to calculate the distance. This makes it perfect for applications like obstacle detection, level measurement, and autonomous navigation.

Compatible with platforms like Arduino, Raspberry Pi, ESP32, and more, the HC-SR04 is widely used in DIY electronics, smart cars, and proximity sensing systems.

Key Features:

• ✅ Non-Contact Distance Measurement
  Uses ultrasonic waves for accurate distance detection without physical contact.

• ✅ Wide Detection Range
  Measures distances from 2 cm to 400 cm (4 meters) with an accuracy of up to ±3 mm.

• ✅ Fast Response Time
  Delivers real-time measurements with quick echo response for dynamic environments.

• ✅ Easy to Interface
  Works with 5V logic and connects via four simple pins: VCC, GND, TRIG, ECHO.

• ✅ Low Power Consumption
  Energy-efficient, ideal for portable and battery-powered projects.

• ✅ Compact Design
  Small size makes it easy to integrate into robots, smart vehicles, or embedded systems.

Specifications:

• Operating Voltage: 5V DC

• Operating Current: 15 mA

• Measuring Range: 2 cm – 400 cm

• Accuracy: ±3 mm

• Trigger Input Signal: 10µs TTL pulse

• Echo Output Signal: TTL level signal

• Dimensions: 45mm x 20mm x 15mm

• Interface: 4-pin (VCC, GND, TRIG, ECHO)