Power failure alarm device for machine room

The utility model belongs to the field of machine rooms. The power failure alarm device for the machine room is provided. The device comprises a shell, a sliding rod, a supporting column, an electromagnet and a buzzer, the electromagnet is arranged in the shell; an armature is arranged below the electromagnet; a pressing plate is arranged below the armature; a pressing switch is arranged below thepressing plate; a switch base is arranged below the pressing switch; the supporting columns are arranged on the two sides of the electromagnet, the sliding rods are arranged on the inner sides of thesupporting columns, the sliding rods are connected with the supporting columns in a sliding mode, handles are installed above the sliding rods and connected with the sliding rods through screws, buckles are arranged on the outer sides of the sliding rods and the outer sides of the supporting columns, and springs are connected to the buckles in a clamped mode. According to the utility model, the pressing switch and the pre