Spec Sheet Preview: The Alpha®/S.T.R.™ DZ209/5 and DZ209/10 diode board units are designed to work with our HT2009 or HT3009 (2-wire) apartment handset stations and/or 5661/000 (NoCoax) type video-intercom systems. The DZ209/5 diode boards are installed into the lobby entry door stations, to enable standard pushbuttons to be used with the HT2009, HT3009 and 5661/000 systems. The diode boards are provided with self-stick tape to allow them to be mounted in a convenient spot, inside the lobby entry panel(s). …