Ibutton ISO1990A-F5, ISO1991L-F5 Compatible Dallas TM keys, Touch memory Wristbands, Patrol guard keys, Door lock keys

新闻稿   •   2012年12月14日 11:26 CST

* Upgrade of DS1990 allows multiple serial number
* iButtons to reside on a common bus
* Unique 48bit serial number
* Low cost electronic key for access control
* 8bit CRC for checking data integrity
* Can be read in less than 5ms
* Operating temperature range of -40C to +85C

* 1152bit secure read/write, nonvolatile memory
* Secure memory cannot be deciphered without matching 64bit password
* Memory is partitioned into 3 blocks of 384bits each
* 64bit password and ID fields for each memory block
* 512bit scratchpad ensures data transfer integrity
* Operating temperature range -40C to +70C
* Over 10 years of data retention

Ibutton Size: dia17mm × 6mm, Weight: 3.3g
TM key size: Handle L40×W15mm, weight 4.5g
Wristband size: band dia 65mm, stretchable

Access control / Guard Tour system / security patrol / sauna door locks / electronic door locks

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