[V]iButton Starterkit von Maxim.

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EV Kit Contents
QTY   DESCRIPTION
1   DS1904-F5 iButton Real Time Clock
1   DS1971-F3 iButton 256-bit EEPROM
1   DS1971-F5 iButton 256-bit EEPROM
1   DS1990-F5 Serial Number iButton
1   DS1996-F5 iButton 64-kbit Memory
5   DS9093F, DS9093AB/AG/AR/AY key fobs
1   DS1402D-DR8 dual Blue Dot™ Receptor
1   DS9490R USB to 1-Wire adapter

->45€ VHB(neu)