DAILY RFID CO.,LIMITED(http://www.rfid-in-china.com) is the professional provider of 125KHz(Low Frequency) RFID Key Tags,RFID Key Fobs,RFID Key Rings with the chip TK4100 in china. Product Details: 1)Type: Contactless Read & Write 2)Operating Frequency: 125KHz or 13.56MHz 3)Compliance . IC Available at 125KHz nominal: EM4100, Hitag-1, Hitag- 2, Hitag-S, TK4100 . IC Available at 13.56MHz nominal: Mifare-One S50, Mifare-One S70, I-CODE, Ti 256, INSIDE 2K 4)Material: ABS 5)Physical Size: 3.5cm*2.8cm Thickness: 6.4mm Standard Color: Blue or other colors 6)Printing: Printable with silkscreen (no more than 2 colors) A customized logo can be printed on the tag 7)Operating Temperature: -10℃ to +50℃ 8)Storage Temperature: -20℃ to +70℃ 9) Packing: 100PCS/BOX 2000PCS/CARTON Carton Size: 50× 24× 28CM