Features: 4 Repelling Modes to choose from 12 powerful LED strobes that can be turned on or off An ultrasonic speaker emitting High-frequency ultrasounds An impulse transducer transmitting intermittent impulse attack waves An audio speaker playing audio recordings of rodents predators This rodent repellent is easy to use. Simply plug it into an outlet in the room you want to protect from rodents, set the repelling mode and turn on the LED strobe lights based on your needs, and it will start to do its job.Emits a combination of multiple sounds and LED strobe lights to discourage rodent visits12 high-intensity LED strobe lights with dusk to dawn sensor disturbs rodents eyesight in dark environmentDifferent sounds coming from 3 different speakers maximize rodent repelling resultsFour different sound modes to choose from: TEST, ULTRA, DUO, TRIO; A volume controller to adjust the volume of the audio speakerINDOOR USE: Simply plug it into a 110 220 volts outlet in the room you want to protect from rodents; Ideal for home, businesses, warehouses, etc.