Looking to make 500 RFID 125kHz duplicator to read and write all common cards and key forbs To EM4305 and T5577 card and key forbs need a very small case like garage or alarm remote Case to mount the duplicator inside must have 2 LED one for read one for write also 2 bottoms 1 read 1 write and buzzer when you press read button and where it writes buzzer as well Good price only $4 and under Thank you Sergio Show More