My new Sangean RCR-3 clock radio is nearly perfect, but when you set an alarm, the alarm button lights up bright enough to cast shadows across the room once your eyes are dark adapted, so I whipped out this little part to fit over the left column and stick over the buttons to hide them. A little aluminum tape on the inside, and no light is getting through any longer. (Strangely you can control the light level of the display, but apparently not the buttons).