Description

The HC-SR04 Ultrasonic Distance Sensor is an affordable module designed for non-contact distance measurement using ultrasonic sound waves, it measures the time taken for the echo to return and converts this into distance. This makes it ideal for robotics, automation, obstacle detection, and DIY electronics projects.

Features:
Measuring range: 2 cm to 400 cm
Accuracy: ±3 mm
Operating voltage: 5V DC
Current consumption: ~15 mA
Ultrasonic frequency: 40 kHz
Trigger input: 10 µs TTL pulse
Echo output: TTL pulse proportional to distance
Interface: 4-pin (VCC, Trig, Echo, GND)
Board size: approx. 45mm x 20mm x 15mm