MR811 series contactless IC card reader / writer is based on NXP series RF chip with high performance ARM7 MCU. The communication is according to USB PC / SC standard. The reader fully supports the IC card according to ISO14443 standard, especially completely supports ISO14443-4 contactless CPU card.The reader builds in 2 SAM slots, and fully supports SAM according to ISO7816. PCD: NXP MF RC531 • Working frequency: 13.56MHz • Standard RF: ISO14443A, ISO14443B • Operating distance: 100mm (MIFARE One, typical) • SAM slot: 2 slots, ISO7816 terms (T = 0 & T = 1, terms PPS, Max 230400bps) • Display: 1 tri-color LED • Buzzer: Build in • FLASH data: 4 Mbytes • Interface: USB PC / SC standard • Power supply: DC5V ± 10% • Power consumption: 0.9W • Dimension: 123mm * 88mm * 25mm • Weight: About 100g • Operating temperature: -25 ~ +85? (-77 ~ + 185 ° F) • Storage temperature: -40 ~ +125? (-104 ~ + 257 ° F) • PC software: PCSC Communication Tool • SDK: