
Sensor
HC-SR04 Sensor
The HC-SR04 is a low-cost ultrasonic ranging module that provides non-contact distance measurement from 2cm to 400cm with high accuracy. It is ideal for robotics, obstacle avoidance, and liquid level sensing applications.
₹151.00
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₹151.00
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About HC-SR04 Sensor
The HC-SR04 Ultrasonic Sensor is a popular and easy-to-use module for non-contact distance measurement. It works by sending an ultrasonic wave at 40kHz which travels through the air, reflects off an object, and returns to the sensor. By measuring the time taken for the echo to return, it calculates the distance with high precision. This sensor is widely used in Arduino projects, robotics for obstacle detection, and industrial applications like liquid level monitoring. It operates at 5V logic, making it compatible with most microcontrollers including Arduino, ESP32, and Raspberry Pi. The module includes an ultrasonic transmitter, receiver, and control circuitry on a small PCB. Its compact size and simple 4-pin interface (VCC, Trig, Echo, GND) make it extremely easy to integrate into your projects. Choose the HC-SR04 for a reliable, affordable, and accurate distance sensing solution.
Technical Specifications
| Sensor Type | Ultrasonic |
|---|---|
| Operating Voltage | +5V DC |
| Theoretical Measuring Distance | 2cm to 450cm |
| Practical Measuring Distance | 2cm to 80cm (optimal range) |
| Accuracy | Up to 3mm |
| Measuring Angle | Less than 15 degrees |
| Operating Current | 15mA |
| Working Frequency | 40kHz |
| Dimensions | 45mm x 20mm x 15mm (approx) |
| Interface | 4-pin (VCC, Trig, Echo, GND) |
| Logic Level | TTL (5V compatible) |
Alternative Components
JSN-SR04T
HY-SRF05
MaxSonar-EZ
VL53L0X









