1g 2w D302 Royal

The 1G indicates that the switch is a single-gang switch, which means that it can control one light fixture.
The 2W indicates that the switch is a two-way switch, which means that it can be used to turn a light fixture on and off from two different locations.
The D302 indicates that the switch is a Royal switch, which is a type of switch that is made by the Royal Electric Company.
The white indicates that the switch is white in color.