Six 6 Super Bird-X Peller PRO 1 for Bird Control up to 6 Acres Use PRO 1 for bird control of Pigeons, Starlings, Sparrows, Gulls, and Robins Case of 6 individual units. Save money. Drive pest birds away with this sonic bird repellent device. Programmable species-specific bird pest control device Reduce bird droppings and damage from pest birds. This sonic repeller from BIRD-X uses birds' own distress calls to create a danger zone . Manage bird problems by frightening infesting birds away. Covers up to 6 acres. Proven in extensive field tests, Super BirdXPeller PRO significantly reduced or eliminated bird infestations. How Sonic Bird Repellents Work Super BirdXPeller PRO uses birds' distress cries from a microchip supplied by a major American university . Birds hearing these sounds perceive danger and become agitated and disoriented. The birds think flock mates are in trouble. The problem birds flee the area . . . never to return. Species-Specific and ProgrammableOptions Target selected birds PRO 1 targets pigeons, starlings, sparrows, gulls and robins Volume control of sounds Time off periods Random or sequential order of sounds Periodic reprogramming of sound patterns in your Super BirdXPeller PRO to prevent birds from growing used to a pattern. Harmless Super BirdXPeller PRO harasses birds with loud, terrorizing sounds. Easy Operation Standard 110vAC required adapter included . Optional solar power panel recharges a 12VDC deep cycle marine battery not included that powers the PRO. Synergy Pair with a visual device or a physical barrier for best effect. Call for details. Super BirdXPeller PRO Includes Heavy-duty NEMA control box, with controls, four powerful directional speakers, AC adaptor DC battery cables, and complete instructions. Specifications Dimensions Control Panel 9 x 9 x 5.25 Speakers 4 x 4 x 6 Shipping Weight 12 lbs. per unit. Coverage Up to 6 acres. Sound Pressure 105 110 dB at 1 m This item ships from a separate warehouse and may require extra time for delivery.