Chip: TM1990A,compatible with DS1990A
Model Number: TM1990A-F5
Material: stainless steel,ABS plastic
100 x DS1990A F5 iButton I-Button ,not 1990A-F5+
Color: Blak/ Blue//Red/
Application scope: Access control system; Biological tracking and recognition system; Warehouse logistics system; Security patrol system; Hotel and community one card system; Identity recognition systems, security patrols, and other industries.