The Racan Solar Sonic Animal Repeller is designed with three bionic sounds (gun, eagle, dog), a flashing light and ultrasonic waves to scare cats, dogs and wild animals. It has 4 different modes – Volume, Night and Day Mode, Bionic to Ultrasonic and Sweep Frequency. The Passive Infrared sensor (PIR) detects motion and triggers the flashing lights and the speaker which emits ultrasound at a frequency between 12.5-25kHz to repel unwanted animals away. The device can be recharged by solar power or by USB. The repeller unit keeps protecting 24hrs night and day. Will repel cats, dogs, foxes, squirrels and birds. 3x powerful sonic sounds Solar-powered self-charging unit Continuous 24-hour humane protection 110 degree detection sweep - up to 10m