LM20A21 Features s 20 characters x 2 lines s 5 x 7.
LM20X21A - Character Type LCD Module(FA/POS/Measuring instruments)
LM20A21 Features s 20 characters x 2 lines s 5 x 7 dots with cursor Character Type LCD Module (FA/POS/Measuring instruments) s STN LCD (Reflective) .