The tamper-resistant substation come in a rugged metal front plate of anodized, brushed aluminum or stainless steel. The substations have a unique design to protect the loudspeaker, microphone, LED indicator and internal electronics from external abuse. The metal front plate can be securely fastened to the box with 4mm tamper-resistant screws or pop rivets.

Buttons can be programmed to call any extension number or feature - including Emergency calls, all calls or call queuing to a STENTOFON control room master (CRM) or call handler system. Stations have screw terminals with labels ensuring easy installation.