An ultrasonic sensor is an electronic device that measures the distance to a target object by emitting high-frequency sound waves (ultrasound) and listening for the reflected echo
| • Operating Voltage | 5V DC |
| • Operating Current | 15 mA |
| • Operating Frequency | 40 kHz |
| • Measuring Range | 2 cm to 400 cm (4 meters) |
| • Accuracy / Resolution | ~3 mm (0.3 cm) |
| • Measuring Angle (Beam) | 15° effectual/measuring angle |
| • Trigger Input | 10 µs high-level TTL pulse |
| • Dimensions | 45 x 20 x 15 mm |
| • Pins | 4 pins (VCC, Trig, Echo, GND) |