Package of Six 6 Super Bird-X Peller Pro2 Sonic Bird Repeller Units PRO 2 targets crows, blackbirds, grackles, ravens and cormorants and robins. Drive pest birds away with this sonic bird repellant! Programmable species-specific bird repeller BIRD-X uses birds' own distress calls to create a danger zone . Pest managment by frightening infesting birds away for good. Covers up to 6 acres. Proven in extensive field tests, Super BirdXPeller PRO has significantly reduced or completely eliminated bird infestations. How It Works As A Bird Repellant Super BirdXPeller PRO features birds' distress cries on a microchip supplied by a major American university . When birds hear these sounds, they perceive danger becoming agitated and disoriented. The birds think their flockmates are in trouble. The birds flee the area . . . never to return. Species-Specific and Programmable Options Target selected birds PRO 1 targets pigeons, starlings, sparrows, gulls and woodpeckers. Volume of sounds Time off periods Random or sequential order of sounds Prevent birds from getting used to any one pattern by periodically reprogramming your Super BirdXPeller PRO. Harmless Super BirdXPeller PRO harasses the 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 which in turn 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. Coverage Up to 6 acres. Sound Pressure 105 110 dB at 1 meter. Power Requirements 110 or 220vAC or 12vDC, optional. Frequency 3 5 kHz. Compliance UL and CE listed. EP This item ships from a separate warehouse and may require extra time for delivery.