Spec Sheet Preview: The DB3 series alphabetical display modules are designed to be used with Alpha Communications® / S.T.R.™ QwikBUS™ modular series door entry stations. When used in conjunction with the EM3 or EMV3 (vandalresistant) series keypad module, the DB3 enables a building visitor to easily find and dial an apartment code number. All DB3 alphabetical display modules feature a high brightness 4-line LCD display, for name and code# display. Each QwikBUS™ system utilizing the DB3 alphabetical disp …