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Fingerprint lock card description
Author: Source: Date: 2019-06-12 14:10:35
ID card is often said that the low-frequency card, usually in most cases as an access control card or most of the university to use the meal card, generally thicker card, is read only, the card which holds only a string of unique serial number ID, can understand this string of numbers for your ID number, credit card, the reader can only read the ID number, and then through the database with the background to match, if it is access card, then the database is there such an ID Number, if the match on the door to open, do not match the door does not open.
T5557 card identification applications
T5557 card is a new ATMEL company produced a proximity card, tuning frequency from 100 kHz to 150 kHz, can be encrypted, the amount of data for the 330, 64 ID number, Compatible with E5550 / E5551, and extended mode. As a typical low-frequency, can be encrypted, read-write card, T5557 in the market has a great application prospects. First, IC characteristics Operating frequency at 125KHZ, non-contact card class. 224-bit EEPROM can be read and written, divided into seven, each 32-bit. There are password settings and write protection. Read mode can be set by the user. Anti-collision Built-in capacitors can be masked options, but also with external capacitors. Unique 64-bit serial number with traceability. IC operating temperature -40 ℃ to +85 ℃.
A number of preferential policies to support the appearance of a variety of patented products, invites door locks, metal dealers win-win cooperation.
Interested parties are welcome to call: 18684988016 (WeChat the same number) QQ: 1410478322