UltrasonX Outdoor Ultrasonic Bird Repeller Specifications Dimensions: Control Unit 9" x 9" x 5" speakers 4" x 4" x 6" Speakers: 8 ohms, 30 watts Weight: 15 pounds Coverage: Up to 3600 square feet Power Requirements: 110vAC (220vAC available) Sound Presure: 95-102 dB (each speaker) @ 1 meter Frequency: 15-25 KHz Compliance: Supply power source is UL and CE listed. EPA Est. 075130-OR-001 Buy It NOW UltrasonX Bird Repeller 110 V UltrasonX Bird Repeller 220 V