Proud Tek’s 125KHz RFID cards are designed to provide seamless access control and identification solutions for a variety of applications. Our RFID cards are produced with a variety of 125KHz chips, including TK4100, EM4100, EM4200, EM4305, EM4450, T5577, Hitag1, Hitag2, Hitag S256 and more, providing unparalleled versatility and functionality.