Spec Sheet Preview: The Alpha Communications® IS427C (V.I.P.™ series) apartment intercom stations are designed specifically to minimize vandalism and tenant abuse. Made from .020" thick solid stainless steel, with solid metal push-buttons, these stations are made to last. A high sensitivity 1.75" (45mm) speaker assures clear voice communication, as well as tone signal response. The IS427C can be flush mounted flush over a standard 2- gang electrical back box or plaster ring. Color-coded pigtail wiring makes these stations e …