The utility model provides a scene can mark tablet by automatic switch electric power, its photovoltaic cell array passes through the wire and connects the photovoltaic rectifier, the wind energy conversion system passes through the wire and connects the fan rectifier, the battery passes through the wire and connects the photovoltaic rectifier respectively, the fan rectifier, inverter, the dc -to -ac converter passes through the wire and connects the light sense detector respectively, the microprocesso, mark the tablet switch, the light sense detector, the microprocesso, it connects in proper order to mark tablet switch passing signal line, it connects isolator respectively through the wire and marks the tablet to mark the tablet switch, the circuit breaker marks the tablet, the terminal box marks the tablet, current transformer marks the tablet, voltage transformer marks the tablet, earthing knife -switch marks the tablet, main transformer marks the tablet, the condenser marks the tablet. Beneficial effect: scene can mark tablet by automatic switch electric power has the illumination function, enables the staff and sees clearly at night and mark the tablet, and the tablet switch is marked in automatic closed or disconnection at night, daytime, has utilized clear light energy, wind energy, need not the station and uses the transformer source, and is novel in design, practical.