10Pcs 13.56MHZ CUID Keyfobs Changeable MF S50 1K I

10Pcs 13.56MHZ CUID Keyfobs Changeable MF S50 1K I Description

This card works the same as the normal IC cards, for 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block(Chip CUID) could be programmed to any UID you want.
CUID card block 0 (UID's block) can be modified arbitrarily.
block 0 directly with normal mif read-write device modification.
Frequency: 13.56 MHz

Capacity: 1k bytes EEPROM memory
Rewrite Times: 100,000 times
Read Distance: 0 ~ 10 cm(depends on the Reader)
Initial Key: FFFFFFFFFFFF (12F)
common 13.56 mhz rfid reader writer and nfc phone can not write the particular cards!
Colour:random color , don't accept the specified color
Material:ABS

Package Contents:
10 x CUID Tags

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.