CENTURION INTERCOMS

Video shows you who is there, which is the point of an intercom on a street-facing gate. Audio-only is cheaper and fine for internal doors or where a camera already covers the entrance.

Yes. App-based and IP intercoms send the call to your phone over the internet, so you can answer and open the gate from anywhere. They need a stable network connection at the gate station, and they keep working through a power outage only if the router and the station are both backed up.

A single-house system usually pairs one gate station with one or two indoor monitors. Multi-unit systems for complexes and offices run many stations and monitors on one bus or network, and that scale is what decides between a two-wire system and an IP one.

Yes. The intercom provides a relay output that connects to the gate motor or electric lock, so answering the call and pressing the release opens it. That connection is the part worth having installed properly, because it wires into the motor controller.