Description

Model: HC-SR04.
Sensing Technology: Ultrasonic echo timing.
Measurement Range: 2–400 cm.
Accuracy: Can reach approximately 3 mm under suitable conditions.
Operating Voltage: 5 V DC.
Operating Current: Approximately 15 mA.
Ultrasonic Frequency: 40 kHz.
Measuring Angle: Approximately 15°.
Trigger Input: High-level pulse lasting at least 10 µs.
Echo Output: Pulse duration represents the ultrasonic round-trip travel time.
Connection Pins: VCC, TRIG, ECHO and GND.
Dimensions: Approximately 45 × 20 × 15 mm.
Applications: Robot obstacle avoidance, object-distance measurement and automated monitoring.