This device converts any numeric Wiegand Data string into HID compatible output. Ideal for a large variety of Wiegand compatible readers that need to be attached to a Ringdale Access Control System or a Laptop. The unit supports 26-bit to 37-bit Wiegand readers. The supply voltage for the reader is selectable between 5 volts and 12 volts. Many Wiegand compatible readers require more than 5 volts to operate reliably.