Hotel lock prompt service device

The utility model discloses a hotel lock prompt service device which comprises a circuit board, a magnetic induction sensor, a fixing frame, a metal knob elastic piece, a knob, a magnet and a displaymodule. Wherein the shell is provided with a first opening and a second opening opposite to the first opening, the display module is arranged at the opening of the shell, and the knob is arranged at the second opening; the shell is provided with an identifier at one end of the knob; the fixing frame is provided with a movably connected metal knob elastic piece, one side of the fixing frame is provided with a magnet, the knob is arranged on the side, opposite to the first opening, of the shell, and the knob penetrates through the shell to be fixedly connected with the metal knob elastic piece;and the circuit board is provided with an electrically connected light module. According to the utility model, the circuit board can detect the operation of a guest and trigger the light module to illuminate the preset charact