125Khz RFID module

Hello
I want you motor run by receiving orders from RDFID TAG
Through 125Khz RFID module - UART and Arduino UNO and Motor High quality Stepper motor 12V
How can it do this and what is the appropriate code for this device

Here is for your reference:http://garden.seeedstudio.com/125Khz_RFID_module_-_UART#Resources