MP2 Wires Assignment Color Symbol I/O Red VCC IN Power Input: 12VDC Description Power Ground + Singal Ground Black GND IN Yellow D1 OUT Clock (ABA TK2) ; Data 1 (Wiegand) Blue D0 OUT Data (ABA TK2) ; Data 0 (Wiegand) Green CP OUT Card Present (ABA TK2) White RX IN RS232 RXD (To Host TXD) Orange TX OUT RS232 TXD (To Host RXD) Brown Boot IN - - - - Reboot (While this line wired with GND at power on,MP2 will enter boot phase.
