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one point the price of a sub-freight the quality of the chips not the same as different contact 4442 chip card Product Features Description : smart with Write Protection function and security logic < / p> capacity : 256 bytes Product Standards : ISO7816 security features : secure password transmission 4442 card's initial password is ffffff password protected byte irrevocable chip code working voltage current : 5V 10MA ( China-made products are 2.7-5.5V a voltage products ) write / erase times : 100000 th every time to write / erase time : 2.5MS Applications : health insurance , Access Control , electronic door lock ,
