i'm just bought PR25 door lock security for my networking project purpose.Original function for PR25 is when i touch first time the rfid tag,relay will activate and this relay will unactivated by pressing reset button or adjust the timer.so for my project i need to modified the source code so that when i touch the rfid tag,it will activate the relay,then when i touch tag again for second time,this relay will unactivated.anybody can help me
thk..