read only ibutton 64bit chip TM1990F4 compatible DS1990 access control cards

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 environmentalhazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the TM1990A to be used easily by human operators. Accessories permit the TM1990A iButton to be mounted on almost any object, including containers, pallets, and bags.

APPLICATIONS
1.Access Control
2.Work-In-Progress Tracking
3.Tool Management
4.Inventory Control.

SPECIAL FEATURES
Can Be Read in Less Than 5ms
Operating Range: 2.8V to 6.0V, -40°C to +85°C

Shenzhen Smart Way technology Co.,Ltd set up on 2011,built in Futian District, Shenzhen, China. our products are smart cards of access control and security equipment,such as Ibutton,RF cards,chips,etc.our core service is credit first customer,welcome your coming. read only ibutton 64bit chip TM1990F4 compatible DS1990 access control cards read only ibutton 64bit chip TM1990F4 compatible DS1990 access control cards