A switch with backlight device, adapted to switch on internal or external lights and to be used for electrical outlets, heat regulators or for opening or closing doors and gates, includes lighting bodies and transparent sides configured to allow the passage of the light emitted by the lighting bodies toward the outside. The switch with backlight device is also provided with a wireless remote connection system suitable for the wireless remote connection of a mobile device, such as a mobile phone or a tablet, which is configured to transmit commands for switching on the backlight of the switch.