Our advanced and powerful ultrasonic repeller emits a whistle which specifically targets the frequencies cats hear, to deter them from entering and fouling your garden without harm. Won\'t affect most other animals or pets Range of up to 12 metres with 60 degrees of rotation Includes both wall mount and ground spike for flexible positioning Works on a looped cycle or infrared motion sensor setting LED light smartly indicates settings and low battery Uses two 9v batteries (not included) Universal power kit available for mains power