Crow and Raven Mega Blaster PRO from Bird-X for Up to 30 Acres Coverage This sonic bird repellent unit by Bird-X protects up to 30 acres. Pest bird control is easier with the MegaBlaste r BirdGard Sonic bird repeller .The MegaBlaster uses intermittent distress calls to create a danger zone that frightens infesting birds away for good. PREDATOR cries help scare all the birds. Perfect for Airfields, Landfills, Farm Fields or any multi-acre facility. This extremely powerful system features two high-output amplifiers that drive a specially-designed 20 speaker tower. The intense sound output covers up to 30 acres 12 hectares . It features solid-state electronics mounted inside a NEMA-type control box, suitable for most any application. The generating unit mounts easily to a post or pole using the included mounting hardware and bracket. The unit comes pre-recorded in four different configurations for the most common bird infestations. Chose any or all of the 8 sounds, including predators to give the birds even more of a sense of danger. Then customize the bird guard by choosing volume, silent time between sounds and hours of operation. 4 Standard Configurations. Contact us to customize configurations to target other combinations of birds Agricultural MEGA-AG Marine MEGA-MAR Crow/Raven MEGA-CROW Woodpecker MEGA-WP Crow/Raven MEGA-CROW repels, includes Crow Distress Ring-Billed Gull Crow Danger Raven Blue Jay Magpie Bald Eagle Peregrine Falcon Specifications Repel Birds Up to 30 Acres Crystal-Clear Digital Sounds NEMA Rated Case Frequency Range 2,000 10,000 Hz Up to 125 decibels . Power Input 12VDC 3 AMPS via Solar Panel and Battery. 20 Speaker Tower Dimensions; Weight 15 x 10.625 x 10.625 9 lbs. 8 oz. Solar Panel Dimensions; Weight 15 x 30 x 2 13 lbs. Complete system includes generating unit with two built-in high-output amplifiers, 20-speaker tower with audio cables, 40 watt solar panel, battery clips and a This item ships from a separate warehouse and may require extra time for delivery.