Our T5577 RFID blank card is a standard 125KHz contactless proximity card built with stable T5577 chip, featuring CUID rewritable function for repeated data editing. Made of matte white PVC material, the card surface is blank without any printing, which supports self-printing. Product Specifications Chip Model: T5577 Working Frequency: 125KHz Low Frequency Card Type: CUID Rewritable Blank Card Material: Matte White PVC Standard Size: 3.36in×2.12in Thickness: 0.76mm standard card thickness Working Distance: 2–10cm (depends on matched RFID reader) Waterproof & Wear-resistant, long service life Wide Application Scenarios This 125KHz rewritable RFID card is widely used in multiple civilian scenarios, including: Office building access control system Employee attendance time clock Residential community door entry system Factory workshop access management School student identification cards Retail store membership & point cards Customized internal management ID cards