Spec Sheet Preview: The Alpha Communications® IS407S (V.I.P.™ series) apartment intercom stations are designed specifically to minimize vandalism and tenant abuse. Made from .035" thick solid stainless steel, with metal push-buttons, these stations are made to last. A high sensitivity 2.75" (70mm) speaker assures clear voice communication, as well as tone signal response. The IS407S is designed to easily surface mount right onto the finished wall surface, without a costly back box. For a more secure ins …