RW1990 TM ibutton/Information button of Bare version
TM card is using one-wire protocol communication, to complete the data read and write through the instant touch. It is not only the ease of handling of the non-contact IC card but also the inexpensive contact IC card. TM card is currently one of the best cost-effective IC card.
| Specification |
TM card integrated circuit chip sealed in stainless steel shell, it is waterproof, shockproof, corrosion, durable and no wiring; TM card is a passive device, relies on reading and writing equipment to read information; TM card chip cannot be copied as it is with static protection and uniqueness. |
| Technical specifications |
DALLAS encryption card |
| Average failure |
Normal use 1 / 100,000 times |
| Vendor serial number |
The world's only 64-digit number |
| System logic |
64-bit password protection |
| Storage |
8Kbits RAM |
| Card reader |
Touch type |
| Read and write times |
More than 1.5 billion times |
| Operating temperature |
-40 ºC~+85 ºC |
| Number of readings |
> 35 million times |
| Service life |
> 20 years |
RW1990: storage capacity 64-bit serial number, according to user needs to repeatedly erase copy data.
Audited Supplier 
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