Device capable of automatically adjusting elevator buttons and combination method

The invention discloses a device capable of automatically adjusting elevator buttons and a combination method.The device comprises the elevator buttons, an outbound circuit board is arranged in an outbound assembly corresponding to the elevator buttons, a PWM controller, a control circuit and an MCU chip are arranged on the outbound circuit board, and a plurality of light-emitting elements are arranged in the elevator buttons; a plurality of light-emitting elements in the elevator button are connected in series and in parallel, then connected into a PWM controller of the outbound circuit board through a control circuit and controlled by the PWM controller, the PWM controller is further connected into an MCU chip, the elevator button further comprises a light sensing element, the light sensing element is located behind acrylic of the elevator button and connected into the MCU chip, and when the brightness of the environment is within a conventional range, the light sensing element is controlled by the control