Proximity card reader with USB interface. Features: Store up to 250 tags with USB interface for configuration management, free tag management application for PC, fully documented protocol to write your own application, tags can also be entered with a Mastercard, toggle or pulse NO/NC relay output, adjustable pulse time from 1 second to 4 minutes, three status LEDs and buzzer, two tags supplied (card type), works standalone. Specifications: Product type: Relay card.