A alarm frightens and hinders device for building site

The utility model provides an alarm frightens and hinders device for building site, frightens including reporting to the police to hinder the device and connect the warning and frightens the inductionsystem who hinders the device, the warning frightens and hinders the device and include the mount pad, is fixed with reputation mechanism on the mount pad and hinders liquid jet mechanism with frightening, reputation mechanism includes that the appearance is the lamp house of rectangle structure, and the bottom of lamp house is rotated with the mount pad and is connected, and the left and right sides of lamp house is equipped with a loudspeaker respectively. The utility model provides an alarm frightens and hinders device for building site sets up infrared detection equipment around buildingsite, after someone or animal get into building site and trigger these infrared detection equipment, sends acousto -optic warning by alarm device to spraying coloured frightening and hindering liquid,people or the animal that