Matrix Orbital LCD2041 - Manual (Page 44)

10.2 Read Version Number
Syntax Hexadecimal 0xFE 0x36
Decimal 254 54
ASCII 254 “6”
Description This command will return a byte representing the version of the module,
see the following table as an example:
Hex Value Version Number
0x19 Version 1.9
0x57 Version 5.7
Remembered No
10.3 Read Module Type
Syntax Hexadecimal 0xFE 0x37
Decimal 254 55
ASCII 254 “7”
Matrix Orbital LCD2041 40