These are fully functional with 14 days guarantee. Their exact specs (configuration) is as follows. CFA635; 20x4 LCD with6 buttons (1x5.25" bays)Black plastic with Lexan or Marnot window on bracket (DB635BK)Display Color = White on light w Blue Blacklight (TMF) They do not include the external interface cable (WRUSBY03) (KU1) DB635BKTMFKU
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