Small and elegant design, standalone, Up to10CM read range, USB 5V DC / Max 100mA current, 2 color LED indicators red and green, 125 KHz / CR10E 13.56 MHz / CR10M frequency, -10º to +70º operating frequency, 10% to 90% relative humidity non- considered, black color, ABS + PC with texture material, IEmulation keypad operating system support, connected to PC through USB port Plug and play, read same serial number as ZKTeco devices.