10pcs Newest Version NFC 13.56mhz MF1K RFID Card with 4 Byte UID Changeable Writable SAK Value 0x88, 0x18, 0x19 Changeable Rewritable RFID Card

Description

UID card new version, UID card omnipotent version Advantages: after the modification of SAK, the synchronous response comes out when the card is read. The SAK value can be changed to 0x88, 0x18, and 0x19 equivalents.The SAK value of ADEL card is 0x19.In this way, the SAK synchronous version of UID card can be used to copy those CARDS that are not used by ordinary UID CARDS although they are copied successfully. The SAK value of the old UID card is fixed, the value is 0x08, the SAK value cannot be changed, and the SAK value cannot be modified. Note 1. The card is fully compatible with MF 1k card. 2. The block0 (the block where the UID is located) of the card can be modified arbitrarily and repeatedly. 3. Block0 is modified directly with ordinary MF reader（Like ACR122U-A9 ）, no special equipment is required. 4. The default password of the card is 12 F, namely FFFFFFFFFFFFFF Specs Card chip type :S50 card for NXP MF 1 IC S50 card M1 card Storage capacity :1KB, 8Kbit, 16 partitions, two sets of passwords per partition (1KB=8Kbit) Operating frequency :13.56 MHz Communication rate :106kbit/s Reading and writing distance :0 ~ 10cm Reading and writing time :1 ~ 2ms Operating temperature :-20℃ ~ 55℃ Brush life :>100,000 times Data storage :> for 10 years