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The input acquisition speed of WG (Wiegand) is fast. Each bit of low level time can be collected as low as 30us. Wiegand input to USB (analog keyboard, KEYBOARD) output. The maximum number of digits input by WG (Wiegand) is 255. The output speed of 4USB is fast and stable. The module can output 5V voltage.This voltage is provided by USB interface. This module provides interface source code to facilitate secondary development. Users can upgrade module functions by themselves.