RFID Access Control Key Card H4100,H4120,EM4450,EM4100,TK4100,T5557,Mifare1 S50, Mifare1 S70,125khz/13.56mhz Meterial:ABS Printing Card Number is optional (8digits,10digits,18digits) Meterial: ABSDimension: 51.3×32.5×8.4mmFrequency: 125khz/13.56mhzStandard color: blue,other color need customization.Packaging: gluedTemperature. -25 ~ + 50 degreeIC available at 125KHz nominalTK4100, EM4100, EM4102, ...