Technical parametersRFID chip: TK4100,TK4001,T5557,T5577,EM4100,EM4200,TI,M1 S50/S70,I code 2,UtraLight,FM11RF08,etcMemory: 64bits/330bits/1kbyteWorking frequency: 125KHz/134.2KHz/13.56MHzProtocol Standards: ISO18000-2,ISO11784/85,ISO14443A,ISO15693Read and write distance: 2-10cmReading and writing time: 1-2msWorking temperature: -20℃~+85℃ (-4℉~+185℉)Wipe life: >100,000 timesStorage: >10 yearsMaterials and production process: ABS/PVC/PET, shell encapsulation chips coil,ultrasonic weldingInternational protection agreement: IP67/IP68Size: Φ20mm/25mm/30mm/35mm/40mm,thickness 1mm/4mm (or designated size)luj: 1g-4g