Parameters Frequency: customized 125KHz/250KHz/375KHz/500KHz Read distance: 2~cwm, depending on the Reader and the application environment Wipe the number: >100,000 times Storage: 10 years Working temperature: -20℃~+80℃ Packaging materials: ABS Size: 43×30×5m los yog 50×30×5m, can be customized Colors: Liab, Ntsuab, xiav, Daj, white, lwm yam. Daim Ntawv Ceeb Toom: JavaScript yuav tsum tau rau cov ntsiab lus no.