https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Spectrum 430 and 430-IP Digital Duplex Intercom System

Spectrum 430 and 430-IP Digital Duplex Intercom System

Jeron Electronic Systems
Region: United States of America
Update: 10/16/2012
Key Specifications

The compact central exchange is perfect for tight spaces and calls are non-blocking allowing multiple conversations to occur simultaneously. Minimal station wiring makes installation simple. The Spectrum system can be used in virtually any commercial, industrial, or institutional setting where there is a need for instant, clear communication.

Versatile Wiring Options - communicates over copper, fiber or IP
Access Control Management Systems – easily integrates with graphic touchscreens through HMI, PLCs or relays
Non-Blocking Communication – simultaneous use of stations
Threshold Monitoring – Sentinel Sound Detector technology automatically places an intercom call to a predetermined location in the event of a scream, a shout or a disturbance near the intercom station
Mass Notification – flexible paging options in the event of an emergency

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions