(100 pcs/lot) TM1990A Dallas iButton Touch Memory TM Card Key Tag DS1990A F5 Non Magnetic for Guard Tour System

Introduction:
The TM1990A 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 ground return. Every TM1990A is factory lasered with a guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel iButton package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is selfaligning with mating receptacles, allowing the TM1990A to be used easily by human operators. Accessories enable the TM1990A iButton to be mounted on almost any object, including containers, pallets, and bags.



Features
Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
Multidrop controller for MicroLAN
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 i Button.
Button shape is self-aligning with cup-shaped 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.
Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class 1, Division 1, Group A, B, C and D locations.


Special Features:
Can be read in less than 5ms
Operating Range: 2.8V to 6.0V, -40°C to 85°C



Application:
Access Control,Work-In-Progress Tracking,Tool Management,Inventory Control




Packing:
100pcs iButton with Handle TM Card Key Tag TM1990A-F5 (readable only)