... quality ABS/PC, Ultrasonic plastic welding Different chips 125KHz, 13.56MHz, shapes available, High quality ABS/PC ... black, yellow, blue, grey, green... IC available at 125KHz nominal:TK4100, EM4100, EM4102, EM4450,NXP Hiatg1, Hitag2, HitagS256 ... picopass 2KS Application: Door Access Control, Burglar Prevention, Patrol Management,Personal Identification, Car Park Control, Member Club Management, etc ...