... frequency is 125khz/13.56MHZ TK4100, EM4200, ICODE SLI, M1 and F08 chips are optional. Waterproof ABS EM/Mifare RFID keyfob for ... :ABS,PVC,epoxy IP65 Waterproof ABS EM/Mifare RFID keyfob for Access Control DescriptionABS RFID key tagPhysical Thickness5mm Width28mm Length34.5mm Reading ... ChipEM4100,TK4100,TKS50,MF1 s70,Ultralight,Mifare Desfire,ICODE1 etc. rfid keyfob tag