<b>High Impact Plug in Ultrasonic Rodent Repellent:</b><br> Featured with 12 strobe lights, ultrasonic waves, blasting impulse attack waves and voices of rodents' natural enemies!<br> Try our ultrasonic mouse deterrent rat repeller device to keep the unwanted rodents at bay!<br><br> <b>Features</b>:<br> LED Strobe lights (independent switch & light sensitive): There're 3 groups of LED strobe lights on the triangle plate, with 4 lights on each side.<br><br> Test (audible): This setting allows you to hear the ultrasound at a audible level to check if the ultrasound speaker is working properly. No ultrasound will be detected in this setting.<br><br> Switch 1 / ULTRA (inaudible): The speaker on the left will emit variable frequency ultrasound which is varying between 19 KHz to 52 KHz and above human hearing. So it's inaudible to human but audible to rodents. Dogs and cats can hear it too.<br><br> Switch 2 / DUO (inaudible): The electronic squirrel repeller will emit ultrasounds and impulse attack wave together. Inaudible to humans. <br><br> Switch 3 / TRIO (audible): DUO function is active, in addition, the speaker on the right will play a loop of 10 kinds of audible sounds that rodents are most afraid of. It includes cat, dog, snake, owl and other natural sounds. Targeting rodents out! <br><br> <b>Note</b>: The features may affect your cat or dog, you can put the product in a place far from your pets if necessary, or choose mode 1 or 2 which has less effect on them. <br> <br> <b>We stand by our product. Should you have any question about your ultrasonic rodent repeller or other rodent control issues, contact us via your Amazon order ID & let us help.