Intercom Entry Systems

Vandalproof® Intercom Entry Panels
HDI Vandalproof intercom entry panels are constructed from 16 Ga. #304 Stainless Steel, supplied to you with tamper proof hardware for an easy installation and will provide you with years of maintenance free use. We are so confident in our Vandalproof panels that they feature a limited Lifetime Warranty. (Details...)

Apartment Stations
HDI manufactures and stocks apartment stations in solid brass or stainless steel, with stainless steel or plastic buttons, in standard and custom sizes, that work with all building intercom systems including those from manufacturers no longer in the business. Our stainless metal button stations are so sturdy that they feature our well known limited Lifetime Warranty. (Details...)

ADA 121® Audio Visual Alert System
Connect the ADA 121® audio/visual Remote Alert System to a doorbell or intercom and never miss a visitor again! As an assistive device for individuals with visual and/or hearing impairments, the ADA 121 is compliant with the Americans with Disabilities Act (ADA) and helps you to meet state and local building requirements. (Details...)

Universal Amplifier
The ACS-35 is a versatile single model universal amplifier for use with 3, 4, 5 or 6 wire common intercom systems. The ACS-35 provides amplification, control, signaling circuitry to operate a complete apartment intercom system. (Details...)

Name Directories
HDI features panel or wall mounted stainless steel or solid brass directories for any size building lobby, intercom system, or custom application. Provide us with the dimensions, specify flush or surface mounting or tell us the number of names to accommodate and we'll do the rest. (Details...)