This utility model releases an alarm device for banishment of birds and animals, which includes: radio transmission module, voltage stabilizing circuit and inverter circuit. The radio transmission module sends radio signals to radio receiver module which then transmits such radio signals to the PC control circuit the said PC control circuit sends instruction signals to the audio circuit which then transmits the audio signal to amplification circuit which outputs the amplified audio signals the said voltage stabilizing circuit provides 5V power supply to the said radio transmission module, radio receiver module, the said PC control circuit and the said audio circuit, while the said inverter circuit provides +/−35V power supply to the said amplification circuit. This device banishes birds and animals by simulating human voices, which can save both save human resources and effectively protect the farm crops, on another hand, it helps to protect the birds and wild animals from kills and harms caused by traditional protective methods therefore, it helps to maintain the ecological balance.
