Ultrasonic Sensor HC-SR04 Distance Measuring Module | 2cm–150cm Range for Arduino, Robotics & IoT Projects

Technical Specifications

• Model: HC-SR04
• Sensor Type: Ultrasonic Distance Sensor
• Operating Voltage: 5V DC
• Working Current: ~15mA
• Measuring Range: 2cm – 150cm
• Accuracy: ±3mm
• Operating Frequency: 40kHz
• Interface: 4 Pins (VCC, Trig, Echo, GND)
• Trigger Input Signal: 10µs TTL pulse
• Echo Output Signal: TTL pulse proportional to distance
• Working Angle: <15°
• Operating Temperature: -15°C to +70°C

Description

The HC-SR04 Ultrasonic Sensor is a high-precision distance measuring module capable of detecting objects from 2cm to 400cm. It uses ultrasonic waves to measure distance accurately and is widely used in Arduino, robotics, and obstacle detection projects.