Place of Origin : Shanghai,China
Post Date : 24-02-2014
Expiry Date : 24-03-2014

1990A-F4 Serial Number IButton Is A Rugged Data Carrier That Acts As An Electronic Registration Number For Automatic Identification. We Provide Ibuttons, Keyfobs, Wristband For Different Use Style.

The 1990A-F4 Is Smaller Size Compared With 1990A-F5, Other Function Is The Same. The Button Size Is 10mm Dia, Height 4mm. The Key Total Size Is 38x15mm.

1990A
* Upgrade Of DS1990 Allows Multiple Serial
* Number IButtons To Reside On A Common Bus
* Unique 48–bit Serial Number
* Low-cost Electronic Key For Access Control
* 8-bit CRC For Checking Data Integrity
* Can Be Read In Less Than 5 Ms
* Operating Temperature Range Of -40C To +85C

Application:
Access Control / Guard Tour System / Security Patrol / Sauna Door Locks / Electronic Door Locks