chip: TK4100 / TK4101, fully compatible with EM4102 Working frequency: 125KHz Working pattern: Maca-mung Sandwich kadohan: 2~10cm Internal serial number: 5 bytes Size: 85.5× 54 × 1.80mm (karo bolongan hotspot) sawetara R / W: 2~ 10cm, depending on the reader and the application environment Working temperature: -20℃ ~ 80 ℃ (-4℉ ~ 176 ℉) bahan: ABS Wipe times: >100,000 panyimpenan kaping Data: 10 taun