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QualityKits Part #: KS485U-ID
KS485U-ID: QuickProx RS485 Proximity Card Reader
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RS485 readers with jumper settable ID.
Up to 31 readers can be connected in parallel and use only one TINY485 connecting to PC's RS232 port.
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Price:  $129.95
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Great for software developers.
Open communication standard, i.e. user can write their own application softwares.
Connect to PC through standard RS485 interface.
Built-in user controllable relay output for external controlling, i.e. electric door lock for access control, etc.
User controllable LED indicate for human interface.
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Price: $129.95
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