HC-SR04 Ultrasonic Wave Detector Sensor 3.3V-5V
The HC-SR04 Ultrasonic Wave Detector Sensor is a high-precision, non-contact distance measuring module designed for a wide range of automation and robotics applications. It works by transmitting ultrasonic pulses and detecting their echo to calculate the distance between the sensor and nearby objects with impressive accuracy.
With full compatibility for both 3.3V and 5V systems, this module integrates easily with popular microcontrollers like Arduino, ESP32, STM32, and Raspberry Pi. The HC-SR04 measures distances from 2 cm up to 400 cm and provides fast, reliable, and accurate output data using its TRIG and ECHO pins. Its robust design and stable performance make it suitable for embedded systems, smart devices, obstacle avoidance robots, and distance monitoring setups.
Compact, lightweight, and energy-efficient, the HC-SR04 sensor is a top choice for engineers, students, and developers building proximity-based or range-finding applications.
Professional Name
HC-SR04 Ultrasonic Distance Measuring Sensor Module (3.3V–5V)
Key Features
Ultrasonic-based non-contact distance measurement
Operating voltage range: 3.3V to 5V
Wide measurement range: 2 cm to 400 cm
High precision and fast response time
Easy to interface with microcontrollers (TRIG & ECHO pins)
Compact and lightweight design
Low power consumption for portable applications
Product Specifications
| Specification | Details |
|---|---|
| Product Name | HC-SR04 |
| Operating Voltage | 3.3V to 5V |
| Current Consumption | ~15 mA |
| Measuring Range | 2 cm to 400 cm |
| Accuracy | ±1% |
| Resolution | ~0.3 cm |
| Ultrasonic Frequency | 40 kHz |
| Trigger Input Signal | 10 µs TTL pulse |
| Echo Output | Pulse width proportional to distance |
| Interface | 4 Pins (VCC, TRIG, ECHO, GND) – |
| Module Size | 45 x 20 x 15 mm (approx.) |
| Operating Temperature | -15°C to +70°C |
Pin Configuration
| Pin | Name | Description |
|---|---|---|
| 1 | VCC | Power Supply (3.3V–5V) |
| 2 | TRIG | Trigger Input |
| 3 | ECHO | Echo Output (pulse width) |
| 4 | GND | Ground |
Applications
Obstacle avoidance in mobile robots
Smart liquid level monitoring systems
Distance sensing in parking systems
Industrial automation and detection systems
Security and presence detection
Educational kits and Arduino projects
