iButton Keyfobs with DS1990A-F5 – Black

iButton Keyfobs with DS1990A-F5 - Black Color

DS1990A-F5 w/ Black Fob

Place of Origin: China(Mainland)                   Part Number: DS1990A-F5-B           Brand Name: Dallas / Maxim Integrated
Min. Order Quantity: 100 Pieces                     Port: Guangzhou                                 Payment Terms: T/T, Western Union, Paypal


iButton Keyfobs with DS1990A-F5 – Black


  • Unique, factory-lasered and tested 64-bit
  • Digital identification by momentary contact.
  • Chip-based data carrier compactly stores information.
  • Data can be accessed while affixed to an object.
  • Economically communicates to bus master with a single digital signal at 16.3k bits per second.
  • Standard 16 mm diameter and 1-Wire protocol ensure compatibility with INFORMATION BUTTON family.
  • Button shape is self-aligning with cupshaped probes.
  • Durable stainless steel case engraved with registration number withstands harsh environments.
  • Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim.
  • Presence detector acknowledges when reader first applies voltage.
  • Stainless steel package with su304-0.3
  • Resistant to heat, Operating temperature range from -40°C to +70°C
  • Over 10 years of data retention



  • Security patrol, sauna door locks, electronic door locks
  • Door intercom, card systems, identification and banking
  • Communications, rail transportation, transportation and others


The DS1990A can be found on its data sheet here: DS1990A DataSheet, and key fobs datasheet: DS9093A DataSheet.



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