The HC-SR04 Ultrasonic Detector Ranging Sensor in its latest version, is a reliable and cost-effective solution for measuring distances accurately within a range of 2 cm to 400 cm. This sensor employs ultrasonic technology, making it ideal for various applications, including robotics, automation, and proximity sensing.

Features:

1. Voltage Compatibility: The sensor is designed to operate within the voltage range of 3 to 5 volts, making it compatible with a wide range of microcontrollers, single-board computers, and embedded systems.
2. Distance Measurement: Capable of accurately measuring distances from 2 cm to 400 cm with a resolution of 0.3 cm. This makes it suitable for applications that require precise distance information.
3. Ultrasonic Technology: Utilizes ultrasonic pulses to measure distances. The sensor emits ultrasonic waves and calculates the distance based on the time taken for the waves to travel to the target object and back.
4. Easy Integration: The sensor is designed for easy integration into various projects. It comes with four pins: VCC (Power), Trig (Trigger), Echo (Echo), and GND (Ground), simplifying the connection to microcontrollers.
5. Compact and Durable Design: The sensor features a compact form factor, allowing for easy integration into tight spaces. Its robust construction ensures durability and reliability in diverse environmental conditions.
6. Simple Operation: The sensor operates on the principle of echo time measurement, triggered by a pulse sent from the Trig pin. The Echo pin then provides a pulse proportional to the distance, which can be easily measured by a microcontroller.
7. Versatile Power Supply: With a wide voltage range of 3 to 5 volts, the sensor can be powered by various sources, enhancing its flexibility in different electronic projects.

Specifications:

1. Operating Voltage: Range: 3 to 5 volts DC
2. Detection Range: Minimum Distance: 2 centimeters
3. Maximum Distance: 400 centimeters (4 meters)
4. Resolution: 0.3 centimeters
5. Operating Principle: Ultrasonic pulse echo time measurement
6. Transducer Frequency: Typically operates at 40 kHz
7. Trigger Input:
   1. Trigger (Trig) Pin
   2. Input signal initiates ultrasonic pulse emission
8. Echo Output: 
   1. Echo Pin
   2. Output signal reflects the ultrasonic pulse and is proportional to the distance
9. Sensor Interface:
10. Four Pins:
    1. VCC (Power)
    2. Trig (Trigger)
    3. Echo (Echo)
    4. GND (Ground)
11. Response Time: Typically within a few microseconds
12. Accuracy: High accuracy in distance measurement
13. Operating Temperature Range: Suitable for operation in a typical indoor environment

Applications:

• Obstacle detection and avoidance
• Robotics and automation
• Liquid level measurement
• Distance measurement in smart home projects
• Various other applications requiring non-contact distance sensing

Package Includes:

• 1 x  HC-SR04 Ultrasonic Detector Ranging Sensor New version 3->5v