Rfid 125khz Coin Disc Tags Read Only Tk4100/em4100/em4200 Round Stickers. Introducing Newbega RFID Disc Tags – a Versatile, Durable, and Easy-to-use Solution for Access Control and Identification Systems. These Round PVC Tags Come in Two Size Options, 25mm or 30mm in Diameter, and Are Equipped with TK4100, EM4100, or EM4200 Chips for Read-only Functionality. Operating at a Frequency of 125KHZ, They Are Compatible with All 125KHZ RFID Readers, Providing Seamless Integration Without the Need for External Power. With a Reading Range of 0 to 5cm, These Tags Are Ideal for a Variety of Applications, Such As Access Control, Staff Attendance, Campus Access, Parking Lot Entry, and Social Security Management. Made from High-quality Materials, Including Waterproof PVC with Self-adhesive 3M Glue, They Ensure Durability and Easy Attachment to Surfaces. Key Features: - Frequency: 125KHZ - Chip Options: TK4100, EM4100, EM4200 - Material: White or Transparent PVC - Design: Round, Dia25mm/30mm - Function: Read-only - Reading Range: 0-5CM - Waterproof: Yes - Operating Temp: -20 to 55°C, 90% Humidity - Package Options: 10/50pcs Per Batch Enhance Your Security and Management Systems with Newbega RFID Disc Tags and Enjoy Reliable Performance in Various Environments..