whats the difference between id-20 and em-18 rfid reader module

Projects Programming
1

I just wanted to know the the difference between ID-20 and EM-18 rfid reader module in terms of reading parsing the rfid data to the serial monitor

is that the ID-20 module that adds 0x02 as the header and 0x03 as the stop byte to the original rfid code

bcoz i dont have any particular datasheet available for EM-18 module

There are many arduino codes posted over the internet interfaced with ID-20 module which particularly checks for the start and the stop bytes
and these same coding doesn't work with my tags and reader module (EM-18)

:astonished:

2

According to this site:

The only difference is the backing. However, there is no mention on the "em-18" on ID Innovations website, so I'll venture a guess and say that the "em-18" is a Chinese knockoff.