RW1990 Ibutton Card
Products Name: TM ibutton Sample: sample for free Chip: RW1990 Aplication: Access control attendance Material:Zinc alloy.
Adopting single line protocol communication and completing data reading and writing through instant touch, it has both the ease of operation of non-contact IC cards and the affordability of contact IC cards, making it one of the most cost-effective IC cards currently.