【Variable Frequency】: The latest powerful 8W repeller, capable of emitting 22-72KHz ultrasonic waves, in addition to our repeller, is equipped with a visual time display corresponding to the ultrasonic frequency to reduce the noise is not used with a fixed frequency, the microcomputer changes the frequency intermittently automatically. This makes the product both efficient and intuitive for you 【Scary Lights】: According to experiments, mice are naturally very light-resistant and like dark and humid environments. So our mouse repellent flickers through the lights to scare and scare away the mouse (3 level brightness adjustable). This is different from the mouse repellents available on the market. What Makes Our Products More Effective 【Wide Coverage Area】:Each ultrasonic electronic pest repellent is effective over a large area. This is much stronger than other cheaper repellents. Please note that ultrasonic waves cannot penetrate walls. Although our insect repellent works well, if