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1 row 4 key membrane switch/Matrix keyboard/ Thin film button control panel Single chip microcomputer extended keyboard

1 row 4 key membrane switch/Matrix keyboard/ Thin film button control panel Single chip microcomputer extended keyboard

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2PCS Micro switch 2*4 matrix keyboard eight key independent single-chip microcomputer extended keyboard module

2PCS Micro switch 2*4 matrix keyboard eight key independent single-chip microcomputer extended keyboard module

2PCS Micro switch 2*4 matrix keyboard eight key independent single-chip microcomputer extended keyboard module

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2PCS 1 one of the keyboard keys micro switch matrix single-chip microcomputer extended keyboard module

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