... , M1 and F08 chips are optional. Waterproof ABS EM/Mifare RFID keyfob for Access Control Chip:TK,EM,MIFARE Material:ABS ... ,PVC,epoxy IP65 Waterproof ABS EM/Mifare RFID keyfob for Access Control DescriptionABS RFID key tagPhysical Thickness5mm Width28mm Length34.5mm Reading distance1 ... ChipEM4100,TK4100,TKS50,MF1 s70,Ultralight,Mifare Desfire,ICODE1 etc. rfid keyfob tag