1.Power Supply: 9-volt battery stacked or a mains powered 9V adaptor 2.Passive infrared area: 70 square meter The device can emit ultrasonic, strong flash,high-decibel sound waves to drive away animals (such as cats, dogs, birds, mice, etc.) via function adjust button A according to different environmental needs.ApplicabilityMultifunction Repeller: suitable environment garden,yard,home and ...