The Alpha Communications®/S.T.R. TT/TTM/TBM series entrance panels are rugged extruded aluminum entrance stations equally suited for indoor or direct outdoor applications. Standard finish is Dark Brown Anodized Aluminum. White and Natural Aluminum are available at additional cost. All TT and TTM/TBM (M=modular style) panels feature oversized, gold-plated, self-wiping, illuminated call buttons, European styling, mylar loudspeaker and electret condenser microphone for exceptional voice fidelity. TT series panels are built in a 1-piece construction in a flush or surface configuration (suffix 'S'), and can be custom-sized for special applications. These attractive but rugged panels can be made with any number of buttons in almost any configuration. TTM (with speaker/microphone) and TBM (button only) series panels are (flush mount type only) modular, snap-together panels which can be ganged up to form virtually any size panel required, using the model FBC flush box snap-on connectors. All panels are available with information modules, built-in privacy handsets, annunciator lights, built-in CCD camera with infrared illuminators, and a host of other optional features. Flush panels are framed by thick (15mm square) extruded aluminum channels. Surface panels are framed by thick (38mm square) extruded aluminum channels. All panels feature a 2mm thick solid aluminum faceplate.