After world war ii, with the recovery and prosperity of the world economy and the rapid growth of the population, the world appeared to be internationally popular tourism. The progress of science and technology has greatly improved the traffic conditions. Create conditions for travel; The improvement of labor productivity, people disposable income increase, to travel and enjoy the hotel's service record for expanded rapidly, speed up the popularization and the world of tourism activities in political, economic and cultural exchanges and frequent. This change in social needs pushed the restaurant industry into the modern hotel period.
Ultrasonic Bird Repeller system that gets rid of birds infestation having a silent to human audio attack. This automated sound system uses four internal speakers to emit high frequency sound waves and audio signals. Ultrasonic Bird Repeller has ultrasonic sound waves to wisely scare, annoy, and Bird Control as well as other wildlife. Ultrasonic means that it can be virtually silent to humans. Effectively eliminate birds and keep an appropriate environment for your all. Ultrasonic Bird Repeller sounds are built to confuse, disorient and intimidate pest birds to quickly scare them away in the effective area as much as 6,500 sq ft. The intense Ultrasonic Bird Repeller sound is measured at 112 dB, nearly equal to a jet airliner taking off. Ultrasonic Bird Repeller transmits sounds that birds perceive danger whenever they hear these sounds. They become agitated and disoriented: believe that their flock mates will be in trouble so that they flee the region to never return. Target birds which has a species-specific approach - not scattershot. Ultrasonic Bird Repeller utilizes a combination of harassments to make a menacing environment that scares birds away without causing them harm.