HC-SR04 Ultrasonic Distance Sensor Module - 2 to 400 cm Range

QAR 17.00/ unit

Description

The HC-SR04 is an ultrasonic distance sensor module designed for non-contact distance measurement with high precision. It operates at 40 kHz, emitting ultrasonic waves and measuring the echo time to calculate distances ranging from 2 cm to 400 cm with an accuracy of ±3 mm. The module outputs a TTL pulse signal and requires a 5 V DC power supply, with a sensor beam angle of less than 15° and static current below 2 mA. It is compatible with microcontrollers including Arduino, Raspberry Pi, STM32, and ESP32, making it suitable for robotics, obstacle detection, and object ranging applications. Features • Measurement Range: 2–400 cm for versatile distance sensing • Frequency: 40 kHz ultrasonic signal for precise echo detection • Accuracy: ±3 mm typical measurement precision • Output Signal: TTL pulse width signal corresponding to distance • Trigger Input: 10 µs TTL pulse for measurement initiation • Operating Voltage: 5 V DC with low power consumption • Sensor Beam Angle: Less than 15° for focused detection • Static Current: Less than 2 mA for energy-efficient operation Specifications • Brand / Model | HC-SR04 • Product Type | Ultrasonic Distance Sensor Module • Measurement Range | 2–400 cm • Accuracy | ±3 mm • Operating Frequency | 40 kHz • Trigger Input | 10 µs TTL pulse • Output Signal | TTL pulse width corresponding to distance • Operating Voltage | 5 V DC • Static Current | <2 mA • Sensor Beam Angle | <15° • Dimensions | Approx. 45 × 20 mm • Applications | Robotics, obstacle detection, object ranging, automation Tutorials • Make an Automatic Gate opener using Arduino (Article) • Make an Automatic Gate opener using Arduino (Video) • Arduino Distance Detector With a Buzzer and LED’s