The utility model relates to a long -distance video approval all -in -one, including central control module and rather than the touch -control display module, wireless communication module, interface module, switching power supply module, fingerprint detection module, non -contact card reader, camera, button module, the power amplifier module that link to each other, interface module includes ethernet interface, audio interface and USB interface, switching power supply module passes through 220V power source input port and connects the commercial power. The utility model discloses simple structure collects multi -functional in an organic whole, makes things convenient for the work ticket's of transformer substation management.