Highlights: Ultrasonic electric design which makes the sensor so smart Used an advanced sonic frequency to drive away rats Safe to use、no harm to human Widely used in home、restaurant apartments、hotels、supermarket and so on Specifications: Item Type:Rats Repeller Gross Weight:Approx 190g Material:ABS Plastic Mode:American Standard Power Supply:220V/50Hz Power Consumption:2.5W Fixed Ultrasonic Frequency:25.5k ¡À 2.5kHz Alternative Frequency Range:32k-65kHz Ultrasonic Sound Pressure(Max):>115dB Suitable Occasions:Home、restaurant apartments、hotels、supermarket Note:Color & size displayed in photos may be slightly different、 please understand.