User's Manual

ACR1281S   
 Advanced Card Systems Ltd.  Page 56 of 56 
TECHNICAL SPECIFICATION 
Universal Serial Bus Interface 
Power source........................................ From +5V power or USB 
Speed ................................................... up to 500Kbps 
Supply Voltage...................................... Regulated 5V DC 
Supply Current ..................................... 200mA (max); 100mA (normal) 
Contactless Smart Card Interface 
Standard ............................................... ISO 14443 A & B Parts 1-4 
Protocol ................................................ ISO14443 T=CL for ISO14443-4 compliant cards and T=CL Emulation for MIFARE 1K/4K. 
Smart card read / write speed ............... 106 kbps, 212 kbps, 424 kbps and 848 kbps 
Contact Smart Card Interface  
Standard ............................................... ISO 7816 1/2/3, Class A, B (5V, 3V), T=0 and T=1 
Supply current....................................... max. 60mA 
Smart card read / write speed ............... max412kbps 
Short circuit protection  ......................... +5V / GND on all pins 
CLK frequency ...................................... 4.8 MHz 
Card connector ..................................... Landing 
Card insertion cycles............................. min. 300,000 
Case 
Dimensions........................................... 120.48 mm (L) x 71.97 mm (W) x 20.4 mm (H) 
Material................................................. ABS
Color..................................................... Metallic Silver Grey 
Antenna 
Antenna Size ........................................ 65mm x 60mm 
Operating distance................................ up to 50 mm 
Operating Frequency for Contactless Cards Access 
Operating Frequency ............................ 13.56 MHz 
Built-in peripherals 
Monotone buzzer 
Dual-Color LED 
Operating Conditions 
Temperature ......................................... 0 - 50° C 
Humidity................................................ 10% - 80% 
Cable Connector 
Length................................................... 10m (RS232
)
Standard/Certifications  
CE, FCC 
OS 
Windows 98, ME, 2K, XP
OEM 
OEM-Logo possible, customer-specific colors, casing, and card connector 










