Khis: EM4102, TK4100, TK4101 COB Frequency: 125KHz Work mode: Read-only Induction distance: 8~20cm Internal serial code: 5 bytes Wipe: >100,000 times Data storage: 10 years Material: ABS, PVC Size: 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°C.+80°C (-4°F.+176°F) Daim Ntawv Ceeb Toom: JavaScript yuav tsum tau rau cov ntsiab lus no.