Character LCD module 40x4 specifications:Module size: 190.0(W)*54.0(H)*13.1(T) mmView area: 149(W)*30(H) mmCharacter pitch: 3.53(W)*6.09(H) mmCharacter size: 2.78(W)*4.34(H) mmChars X lines:40*4Controller: SPLC780DDriving method: 1/16 duty, 1/5 biasDisplay mode: STN,Negative, transmissive, BlueBacklight color: WhiteIC packagings:COBDisplay type:CharacterMechanical drawing and pinouts: