code for Electronic brick - 125Khz RFID Card Reader

hi, i want to know if the product: Electronic brick - 125Khz RFID Card Reader , can also write to the RFID tag or only read data from there, if posible to write, do you have a sample code for the arduino board that can be used to write data at the tag? thank you

hi , Electronic brick - 125Khz RFID Card Read can only be used to read ID of 125Khz RFID card but can’t be used to write data to 125Khz RFID card.
You could have a look at 13.56Mhz RFID module , this moudle is able to be used to read and write data for 13.56kHz RFID card.

Deray