What can you do with T5577 RFID ID cards ? This T5577 RFID ID Card can be read/write and rewritable. Operation Frequency : 125KHz Standard : T5577 ID compatible Compatible with ID Access devices or ID reader Ideal for use in Door Control Entry Access Size : Perfect Size -CR80 Standard Credit Size 85.5 x 54mm. Thin CardThickness 0.84mm. Color : White Material :We use High Quality Brand New PVC. Our Advantages： Flat & Smooth Our NFC cards surface is more flat and smooth. Waterproof Made of waterproof PVC material protects inside chip. Note: Please notice that this T5577 RFID ID cards cannot be compatible with UHF reader and encrypted readers, for example, the reader of following brands: HID, Cobra, APCiK,Paradox,Radio,Honeywell,etc Please consult your technician to ensure your reader will support normal (non-encrypted) standard T5577 125KHz RFID ID cards Package includes: 100pcs x T5577 ID thin Cards (White) Application:Access control attendance, hotel locks, staff attendance, school campus access, membership management, payment control, identification and security systems, parking lot entry and payment . social security management, transportation, municipal and ancillary service.