RW1990 iButton TM Key
Touch Memory Cards(TM Cards)
TM cards (commonly known as Pengpeng card or Button card, also known as iB card (iB is the abbreviation for iButton)) is a patented product of DALLAS Inc., U.S., which communicates with the reader through single line protocol and data read-writes are completed through an instant touch. The card is not only provided with operability of Contactless IC card, but also possesses low cost of Contact IC card, and is one of the best IC cards that has a fairly high cost performance.
Item | TM Card |
Material | ABS , Stainless Steel |
Size | ibutton size: 17mm*6mm |
Color | Red, green, blue, yellow, black, etc |
Working Temperature | -40 ~ +85 degree |
Read-Write Method | Contact |
Memory | 64~1152 bits |
ID number | Engraved |
Chip | RW1990A, RW1990B, DS1990A, TM1990-F5,ds1971,DS1971,DS1991L-F5
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Application | Intelligent Community, Postal Service, Railway St, etc. |
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