Insert batteries into the back compartment or use the included USB cable as a power source.
Light sensor switch located on the side of the shadow box must be turned to ON (I) to activate the light sensor (located at the top of the shadowbox).
When the light sensor button is ON, the LED lights will automatically turn on when the room is dark and turn off when the room is bright.
If you choose not to utilize the automatic light sensor for illuminating the shadowbox, turn the light sensor button into the OFF mode (0). Then push the Power button on the side of the shadow box to turn the LED on and off as desired.