HC-SR04 Ultrasonic Distance Sensor 3.3V

The HC-SR04 Ultrasonic Distance Sensor is a 4-pin distance measurement module designed for robotics, electronics, and automation projects. It uses ultrasonic pulses to measure distances from approximately 2 cm to 400 cm without physical contact. The module provides a simple VCC, Trig, Echo, and GND interface and supports 3.3V to 5V operation.

• Operating Voltage: 3.3V–5V
• Interface: 4-pin — VCC, Trig, Echo, GND
• Measurement Range: 2 cm–400 cm
• Accuracy: Up to ±3 mm
• Type: Ultrasonic distance sensor
• Signal: TTL-level Trigger and Echo
• Size: Approximately 45 × 20 × 15 mm
• Operating Current: Approximately 15 mA