General description The 50Pcs UID 13.56MHz Block 0 Sector Writable IC Card is designed for versatile applications such as access control, campus cards, and prepaid systems. These smart keyfobs are fully compatible with IC 1k cards and allow for easy modification of the UID in Block 0, making them ideal for cloning and customization. Technical specifications Storage capacity: 8Kbit Partitions: 16 Passwords: Two sets for each partition Working frequency: 13.56MHz Communication speed: 106Kboud Reading distance: 2.5-10CM Reading and writing time: 1-2MS Working temperature: -20℃ to 85℃ Erase and write cycles: More than 100,000 times Data preservation: More than 10 years Production standard: ISO 14443, ISO 10536 Material: ABS Color: Mixed color Compatibility and accessories Compatible with IC 1k cards Includes 50 UID copy cards Usage Ideal for water meter prepaid systems Suitable for campus cards and bus stored-value cards Applicable for highway tolls and parking lot access Useful in