Ultrasonic ProtectionThe Product Uses The Infrared Sensing Principle, Using The Infrared Thermal Sensors To Detect Small Animals While Emitting The Ultrasonic Wave And The Strong Led Flash And Sound Alarm To Drive Away The Small Animals. No Chemicals Attached And No Harm To Small Animals And Human Body. Ultrasonic + Strong Flashing Led + Sound AlarmThere Are 14 Strong Led Lights In The Owl'S Eyes. As For His Mouth, It'S An Ultrasonic Transmitter. When The Outdoor Repeller Detects Movement And Body Heat, It Emits A Mixture Of Ultrasound Of Different Waves, Powerful Flashing Lights And An Audible Alarm To Scare Animals Away. Harmless To Humans Or Animals. Infrared SensorThe Nose Of The Owl Repeller Is An Infrared (Pir) Sensor, Capable Of Detecting Animals Of All Sizes. The Effective Area Covers An Arc Of 120 Degrees And A Distance Of 10 M. Once The Pets Come Within 30 Feet, The Motion Sensor Will Emit Ultrasonic Waves And The Led Light Will Make The Pet Feel Uneasy And Escape. Usb Charging And Solar Powered There Is A Solar Panel On The Owl Head. Let The Owl Absorb The Energy When There Is Sunshine. Besides, It Is Equipped With A 2000Mah 18650 Rechargeable Lithium Battery. You Can Also Charge The Ultrasonic Repeller Via Usb Power Supply. Ip66 Waterproof And Easy To InstallIp66 Waterproof Is Able To Withstand Normal Rain. Note: In Case Of A Storm Or Bad Weather, We Recommend Putting It Indoors. There Is A Hanging Hole On The Back Of The Unit For Which You Can Hang The Device On The Wall Or The Fence. The Solar Repellent Comes With A Pole That Can Be Connected Directly To The Ground. It Can Be Installed Anywhere In The Garden Or On The Terrace, Lawns, Farms.