Broad Band-Pro Specifications Dimensions: Control Unit 9" x 9" x 5" speakers 4" x 4" x 6" Speakers: 8 ohms, 30 watts Weight: 16 pounds Coverage: 10,000 square feet ( 2,500 square feet per speaker ) Power Requirements: 110vAC (220vAC available) Sound Pressure: Ultrasonic sounds 95-102 dB (each speaker) @ 1 m. Sonic 105-110 dB (each speaker) @ 1 meter Frequency: Ultrasonic 15-25 KHz, Sonic 3-5 kHz Compliance: Supply power source is UL and CE listed. EPA Est. 075310-OR-001 Origin: Proudly made in the USA