HC-SR04 Ultrasonic Sensor

Description

HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor – Product Description The HC-SR04 Ultrasonic Distance Measuring Sensor Module is a high-precision non-contact distance sensor designed for measuring distances using ultrasonic sound waves. Operating at DC 5V, this module provides stable and accurate distance detection with up to 0.3cm resolution, making it ideal for Arduino, robotics, automation, obstacle detection, and smart electronics projects. The sensor works by transmitting ultrasonic waves and receiving the reflected echo from nearby objects. It then calculates the distance based on the echo return time. The HC-SR04 is widely used in DIY electronics, robotics, IoT systems, water level monitoring, parking sensors, and automation applications. Key Features Non-contact ultrasonic distance measurement Operating Voltage: DC 5V Measuring Range: 2cm to 400cm High Accuracy with 0.3cm Resolution Operating Frequency: 40KHz Stable and reliable performance Easy interface with Arduino, Raspberry Pi, AVR, PIC, ESP8266, ESP32, and other microcontrollers Low power consumption Compact PCB design with mounting holes Suitable for robotics and automation projects Specifications Model: HC-SR04 Working Voltage: 5V DC Operating Current: 15mA Measuring Distance: 2cm – 400cm Resolution: 0.3cm Accuracy: ±3mm Measuring Angle: <15° Trigger Input Signal: 10µs TTL Pulse Output Signal: TTL Echo Pulse Frequency: 40KHz Dimensions: Approx. 45mm × 20mm × 15mm Pin Configuration VCC → 5V Power Supply Trig → Trigger Input Pin Echo → Echo Output Pin GND → Ground Applications Obstacle avoidance robots Distance measurement systems Water level monitoring Smart parking systems Industrial automation Security and alarm systems IoT and embedded projects Automatic door control systems Package Includes 1 × HC-SR04 Ultrasonic Distance Sensor Module