A light switch assembly to replace an existing light switch, which generally includes a mounting bracket attached to an electrical box. The assembly slides into the mounting bracket and is locked into place with the mounting bracket. A decorative light switch cover and custom artwork within the frame snaps and locks onto the outer perimeter of the mounting bracket to complete the assembly. The assembly provides for a battery back-up system for power failure situations to illuminate the white, light emitting diodes in the event of a loss of power. The assembly senses the loss of power and unlocks the switch assembly from attachment to the mounting bracket. Unsnapping the decorative cover exposes the switch assembly so it can be removed from the mounting bracket. The switch assembly then becomes a mobile, hand-held emergency flashlight. The battery back-up system also allows for communication with first responders.