This product is no longer supported as of April 20, 2025. While card processing abilities between this version and the Longrange Wiegand Interpreter v2 running Doppelgänger Core remain similar, we recommend transitioning for performance and functionality improvements.

While the Doppelgänger Breakout Board states that the maximum input voltage is 15V, you can supply up to 28VDC ONLY IF YOU USE ACTIVE COOLING on the LDO (chip indicated by the HOT symbol). Additionally, the power input is a passthrough circuit. This means that whatever voltage you supply to the Doppelgänger Breakout Board will be passed through to your reader. Ensure that your reader is rated for the voltage that you intend to supply. Do this at your own risk!