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Technical Documents

Arduino Ultrasonic Sensor Example (Arduino Docs) HC-SR04 Ultrasonic Sensor Datasheet (PDF)

Application Resources

HC-SR04+ Ultrasonic Sensor Demo & Tutorial HC-SR04 Ultrasonic Sensor Appnotes

EMS-00005-A

(Last updated) Jun 20, 2026

Ultrasonic Sensor

Ultrasonic Distance Measurement Sensor

Subcategory
EMS - Input: Sensors

Description

Ultrasonic distance sensor module that uses 40kHz sound waves for accurate, non-contact distance measurement. Operates on 3.3–5.5V DC and features a simple 4-pin interface (VCC, Trig, Echo, GND) for easy integration. Ideal for robotics, obstacle avoidance, automation systems, parking sensors, distance measurement, and Arduino-based projects.

Manufacturer Details

Manufacturer Part Number
MWduino / Generic MWD-HCSR04+
Elecfreaks HC-SR04
KEYESTUDIO KS103
SunFounder HC-SR04

Technical Specifications

Power Supply (V) +5V DC
Working Current (mA) 15 mA
Output Signal Electrical frequency signal
Ranging Distance 2 cm – 400 cm
Distance Resolution 0.3 cm
Measuring Angle 30°
Operating Voltage Range (V) 3.3V – 5.5V
Interface Type 4-pin (VCC, Trig, Echo, GND)
Shipping Weight 0.007 kg
Shipping Dimensions (L × W × H) 9 × 6 × 2 cm

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