Construction site alarm device

The utility model relates to the technical field of safety management and control, in particular to a construction site alarm device which comprises an alarm mechanism, a mounting device movably connected with the rear portion of the alarm mechanism in a penetrating mode, a loudspeaker fixedly connected with the upper portion of the front end of the alarm mechanism, an electric quantity displayer arranged on the right portion of the front end of the alarm mechanism and two adjusting knobs arranged in the middle of the front end of the alarm mechanism. A microwave sensor is arranged on the lower portion of the front end of the alarm mechanism, a wire is arranged on the left portion of the lower end of the alarm mechanism, handles are fixedly connected to the middle of the right end and the middle of the left end of the alarm mechanism, and a USB interface is formed in the lower portion of the right end of the alarm mechanism. According to the utility model, non-operating personnel can be effectively monitored