A Simple, Easy System to set up and replace old Systems or as a New Construction Apartment/Condo Intercom System
IST618C Combination Schematic (Maximum of 288 Units)
IST619 Combinations for Various Unit Sizes (Maximum 40 Units)
For 14/15/16 units: IST619-2D + IST619-3D + IST619-4D + IST619-12E
For 24/28 units: IST619-12D + IST619-16E
For 32 Units: (2) IST619-8D + (2) IST619-12E
**Multiple entries – connect 4 outdoor stations in one system with IST504D Unit
IST619 Apartment Intercom System for 27 Units
Based on the drawing with 27 units, you will need 3 power supplies, 2 signal amplifiers
