chip: EM4102, TK4100, TK4101 COB Frequency: 125Ang mode sa Work nga KHz: Read-only Induction distance: 8~20cm Internal serial code: 5 bytes Wipe: >100,000 storage panahon Data: 10 years Material: ABS, Kadako sa PVC: 85.5x54mm Thickness: Thick ID card: 1.8mm Standard thin card 0.88mm Non-standard size thin card: 1.05mm or other specified thickness Working temperature: -20℃ ~ + 80 ℃ (-4℉ ~ + 176 ℉)