iButton

DS1961S-F5 1kb Protected EEPROM iButton With SHA-1 Engine
The DS1961S combines 1024 bits of EEPROM, a 64-bit secret, an 8-byte register/control page with up to five user-read/write bytes, a 512-bit SHA-1 engine, and a fully featured 1-Wire interface in a rugged iButton. Data is transferred serially through...
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 ...
DS1990A-F5 iButton with Unique 64-bit Serial ID Number
The DS1990A serial number iButton® is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire® protocol, which requires only a single data lead and a groun...
iButton Fobs with DS1990A-F5 – Red
The iButton serial number (DS1990A) is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a groun...
Dallas Key Fobs DS1990A-F5 – Blue
The iButton serial number (DS1990A) is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire? protocol, which requires only a single data lead and a grou...
i Button Key Fob with DS1990A-F5 – Purple
Key Features Unique, factory-lasered and tested 64-bit Digital identification by momentary contact. Standard 16 mm diameter and 1-Wire protocol ensure compatibility with INFORMATION BUTTON family. Button shape is self-aligning with cups...
Maxim iButton Fobs DS1990A-F5 – Green
The iButton serial number (DS1990A) is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a groun...
iButton Key Fob | DS1990A-F5 with Plastic Holder
The iButton serial number (DS1990A) is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire? protocol, which requires only a single data lead and a grou...
TM1990A-F5 iButtons – w/o 64-bit Serial ID On MicroCan
The TM1990A-F5 electronic iButton key with unique 64-bit code is a full quality analog of Dallas/Maxim DS1990A-F5 iButtons. Designed for access control systems each key has a unique family code that is recorded while the key is being produced and t...
1-Wire iButton with TMC Logo On MicroCan
The TM1990A-F5 electronic iButton key with unique 64-bit code is a full quality analog of Dallas/Maxim DS1990A-F5 iButtons. Designed for access control systems each key has a unique family code that is recorded while the key is being produced and t...