Type: Other Features: Inaudible To Humans Cordless Operation lnfrared Motion Activation Mounts On Walls Or Fences Blends In With Landscapes Durable Green PVC Housing Specifications: Coverage: Arc of 70 degrees, distance 45 ft Audio Frequency: 23,000 Hz Power Supply: 9V Battery Weight: 6.35 oz Dimensions: 4� X 2� X 1 1/2�