Variable FrequencyThe latest designed 5W powerful repellent, capable of emitting 22-65khz ultrasonic waves, in addition to our repellent is equipped with a real-time visual display of the ultrasonic frequency, in order to prevent pests from being used with a fixed frequency, the microcomputer automatically changes the frequency intermittently. Making the product both effective and intuitive for you Scary LightsAccording to experiments, mice are inherently very resistant to light and like dark and humid environments. So our mouse repellent flickers through the lights to scare the mouse and (3-level adjustable lightness). This is different from the mouse repellent on the market. Which makes our products more effective Large Coverage AreaEach electronic ultrasonic repellent is effective for a large area. Which is much more powerful than other cheaper repellents. Please note that ultrasonic waves cannot pass through walls. Although our insect repellent works well, if you have a large infestation, we recommend placing our insect repellent in every room Safe and QuietNon-toxic and environmentally friendly ultrasonic repellent, our repellent is safe and effective, the ultrasonic frequency emitted by this machine is inaudible to humans and pets. Safe for children, family and pets. Indeed, an idea to get rid of the hassle of rats and pests Easy to UseThis machine should be installed 20-30 centimeters from the ground for rats. And vertical to the ground and plug it into the socket. It can be plugged directly into a 220V AC outlet. Can be widely used in homes, warehouses, shops, hotels, hospitals, offices, etc. Save your costs as much as possible Color: White Size: 9*5.6*5cm Quantity delivered: 1 piece