This product has many operation functions, such as one-off simulated dynamic display image, voice anti-misoperation prompt, humiture liquid-crystal display, charged display and locking, remote or local operation, switch-off or switch-on, energy storage and lighting. Besides, the product is equipped with operation instruction, analog indication, pre-breaking and pre-closing lightning indication, body induction probe, loop voltage measurement and display of secondary switch-off and switch-on, RS485 communication and load disconnection alarm.