The present invention relates to a state notification device, the front plate, the front plate and the upper side of each face facing each other is fixedly coupled, the lower and the central plate and the lower side of each inner side of the bottom plate is formed spaced apart from each other And is located in the empty space formed by the upper side of the front plate and the rear plate is coupled to be rotated and moved up and down, and on both sides of the body is displayed different states on one side and the other side, the status display by rotation and vertical movement Including a notice board for changing and fixing, rotatably coupled between the inner surface of the back plate and the one side of the notice board, and includes a status wheel visible on one side by rotating and fixed, the status wheel is in the shape of a cog wheel, the rear It is seated on the inner side of the plate and the opening degree and material name are marked on the other side so that the operator can easily check the opening degree and material name of the valve with the naked eye. have.
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