Ultrasonic sound is punishment. The higher the frequency, the more harm. The longer you hold your finger on the control ...

An ultrasonic pest repeller is an electronic device that emits a high-pitched sound. Humans are unable to hear the high-pitched sound, but household pests can hear the noise and are either killed ...

The sound is, as the name implies ... wanting to source boards and parts themselves. We’ve featured ultrasonic levitation devices before, from bare bones system driven by a NE555 to massive ...

Ultrasonic fingerprint sensor is a biometric authentication that uses high-frequency sound waves to create a ... secure unlocking experience for mobile devices. Access sample report or view ...

Kolkata airport is adopting cutting-edge sonic and ultrasonic technologies to prevent bird strikes, ensuring flight safety ...