Hi,
It is a spring clip that is for securing the Beogram 8002 LED display to the control panel and can be a little tricky to get back in place.
The small LED display fits into the control panel opening behind the red, plastic lens.
The metal clip you are referring to has a flat, metal tab on one end and a curled edge on the other.
The tab fits under the control panel board so that the center of the clip (the "v") presses down onto the back of the LED display.
The curled end grabs the edge of the control panel board to keep the clip from coming off...and pressure on the LED display.
Sometimes you have to first bend the ribbon cable of the LED display assembly so that it isn't fighting you trying to position the holding clip.
Often it wins the battle and as you are trying to fit the control panel back into the cabinet the LED display comes away from the panel as the clip falls out.
A bit of frustrating there but eventually you get the hang of securing it.
Here are a couple of photos.
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-sonavor