We are a company in Chile (South America) and we are interested in buying intercom (audio door system) for buildings. We are looking for reliable suppliers in China that can deliver good quality products.
We are interested in a digital system (2 wires system), but we do not want the video door phone, just the audio. We are interested in the complete system: Door station, mounting plate, electric lock (door strike), the handset extension (kit), etc.
The system must support up to 150 apartments, 2 front station. But usually the system will be installed in buildings with 80-100 apartments and 1 door station. The system must allow installation with / without concierge station.