50Pcs UID 1356MHz Block 0 Sector Writable IC Card Clone Changeable Smart Keyfobs Key Tags 1K S50 RFID Access Control 1. The card is fully compatible with for IC 1k card._x000D_ 2. The block0 of the card (the block where the UID is located) can be modified arbitrarily, and the modification can be repeated._x000D_ 3. Block0 can be modified directly with for ordinary IC reader and writer, no special equipment is needed._x000D_ 4. The default password of the card is 12 F, namely FFFFFFFFFFFF_x000D_ _x000D_ parameter:_x000D_ Storage capacity: 8Kbit, 16 partitions, two sets of passwords for each partition_x000D_ Working frequency: 13.56MHZ_x000D_ Communication speed: 106Kboud_x000D_ Reading distance: 2.5-10CM_x000D_ Reading and writing time: 1-2MS_x000D_ Working temperature: -20-85_x000D_ Erase and write times: more than 100000 times_x000D_ Data preservation: more than 10 years_x000D_ Production standard: ISO 14443, ISO 10536_x000D_ Application scope: Water meter prepaid, campus card, bus stored-value card, highway toll, parking lot, community management_x000D_ Colour: mixed color_x000D_ Material: ABS_x000D_ _x000D_ Package Contents:_x000D_ 50 x UID copy card_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_