On June 11, 2026, an ordinary summer night suddenly turned dark in the Taihe Road area of Changhua City, Taiwan. The cause was unexpected—a small bird accidentally touched a power line, triggering a trip in an overhead sectional switch. As a result, 3,871 households were affected, and it took Taiwan Power Company over five hours to restore full power.
The ultrasonic bird deterrent leverages birds’ heightened sensitivity to high-frequency sound waves compared to humans. It continuously emits ultrasonic waves within the 16kHz–25kHz frequency range, creating strong discomfort and stimulation that triggers birds’ natural instinct to avoid danger, prompting them to leave the area automatically.
More importantly, the device features a "dynamic frequency modulation + multi-mode operation" design: it cycles between three minutes of operation and five minutes of rest. During the active phase, one minute is spent sweeping through frequencies (constantly shifting within the 16kHz–25kHz range), followed by two minutes of fixed-frequency output (randomly selecting and maintaining a single frequency). This dynamic frequency variation and flexible operational pattern prevent birds from adapting, effectively eliminating the problem of diminished deterrence over time.
