Motion ActivationPir Motion Sensor Sensitively Detects Moving Objects While Triggering 120Db Alarm Sounds, Ultrasonic And Flash To Prevent Pets.Friendly Human-Friendly And EnvironmentalAnimal Repeller Will Scare Away Animal Intruders With Ultrasonic Sound And Flashing Light Without Harming Them. No Messy Chemicals And Pesticides, No Traps, No Dead Animals And Advocating Environmental Friendliness.Solar Powered And WaterproofThe Repeller Can Be Directly Charged By The Solar Powered In The Sun Equipped With A Solar Panel On The Top Of The Device To Recharge The Batteries (3 Aa Rechargeable Batteries Included), As Well As Usb Rechargeable. When Exposed To Rain, Snow And Ice, Its Waterproof Feature Can Protect From Wetting, Protecting Your Garden And Farm All Year Round.Adjustable Sensitivity And Frequency- You Can Adjust The Sensitivity And Frequency According To Your Needs, For Example: You Can Set The Frequency To 13.5Khz-19.5Khz To Keep Away From Mice, Dogs, Foxes, Cockroaches, Etc. 19.5Khz-24.5Khz Excludes Cats, Raccoons, Skunks And Other Animals, Please Read The User Manual For More Information.Audible And Visual Alarms- The Repeller Emits A Mixture Of Ultrasonic And Strong Flashing Led Lights To Get Rid Of Animals, Such As Cats, Dogs, Squirrels, Deer, Bears, Birds, Etc. It Is An Essential Companion To Protect Your Garden.