125kHz RFID PVC Self-Adhesive Writable Sticker Tag - 40mm DiameterA thin, round self-adhesive RFID sticker tag operating at 125kHz frequency, built on a T5577 / T5200 writable chip. The tag is encased in a flexible PVC disc with an anti-interference material layer, making it suitable for direct application onto metal-adjacent surfaces and a wide range of substrates. The adhesive backing allows permanent or semi-permanent mounting onto access control readers, elevator panels, attendance terminals, and asset surfaces.Key Specifications Chip Model: T5577 / T5200 Operating Frequency: 125kHz (LF RFID) Read / Write: Writable (rewritable) Form Factor: Round disc sticker Diameter: 40mm Thickness: 0.58mm Material: PVC with anti-interference layer Mounting: Self-adhesive backing Memory: T5577 - 363 bits user memory, 8 pages of 4 bytes (standard configuration) Data Retention: Up to 10 years (typical for T5577) Write Endurance: Up to 100,000 write cycles (typical for T5577) Chip Compatibility T5577 / T5200 writable 125kHz RFID chip Compatible with EM4100, HID, and other 125kHz read formats when programmed accordingly Readable and writable by standard 125kHz RFID readers and writers Compatible with Proxmark, ACM, and other 125kHz programming devices Scope of Application Access control systems - door entry, gate control Elevator floor access control Employee and visitor attendance tracking Asset labeling and inventory identification Time and attendance terminals Parking access and vehicle identification Library and document tracking Equipment and tool tracking Physical Properties Shape: Round / circular disc Diameter: 40mm Thickness: 0.58mm Body Material: PVC (Polyvinyl Chloride) Anti-interference Layer: Yes - reduces signal interference from nearby metal surfaces Adhesive: Pressure-sensitive self-adhesive backing Flexibility: Semi-flexible PVC construction What Is a 125kHz Writable RFID Tag?A 125kHz RFID tag is a low-frequency (LF) radio frequency identification device that communicates with a compatible reader at 125 kilohertz. The T5577 and T5200 chips used in this tag are writable, meaning the stored data (such as a unique ID number) can be programmed and reprogrammed using a compatible 125kHz RFID writer. This makes the tag suitable for cloning, custom ID assignment, and reconfiguration for different access control systems. The 125kHz frequency is widely used in legacy and current access control, attendance, and identification systems worldwide.Package ContentsRFID 125kHz PVC Self-Adhesive Writable Sticker Tags (quantity as selected)

Read more less