material is ASB,waterproof frequency is 125khz/13.56MHZ TK4100, EM4200, ICODE SLI, 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 distance1-5cm depon on readerWeight6g-12g ...