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PCB keypad structure
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PCB keypad structure

Declaration:
1. 1 PCB already populated with LEDs
2. LEDs attached to rear of PCB
3. Display attached to rear of PCB
4. Snap discs
5. Positioning on PCB
6. Holding foil for the metal domes
7. Front spacer
8. Front foil
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Cross Section

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cross section of PCB keypads