4+N

The 4+N system has become a classic, the traditional system with years of experience and proven efficiency. But the conventional system by ALCAD goes a step further and allows the realization of buildings with multiple accesses without the need for additional elements, integrating the entrance panel exchangers inside the own phonic groups of the entrance panels.

Characteristics:

• Wiring: 4+N: 4 common wires and N call wires. (N refers to the number of calls, or number of housings).
• Cable types:
  • Multi-core cable hose (0,22 mm2).
  • Power supply: Parallel 2x1mm2.
• Max. distance outdoor entrance panel to indoor unit: 100m.
• No. of homes: 200.
• Terminal connections: 5 wires.
• Supply voltage: 12Vca.

The incorporated technology has allowed to implement a series of features and functions with the aim of facilitating both the realization of different types of installation and their use by users and the realization of future maintenance.

It is characterized by the fact that each indoor unit of the installation receives 5 wires. Four of these wires are common to all the indoor units of the installation, allowing to transmit the following commands and signals:

• Door opening (door opener).
• Ascending audio (indoor unit speaker).
• Descending audio (indoor unit microphone).
• Reference or common signals.

The fifth wire (call wire) is independent for each dwelling and allows, by pressing the button of a dwelling on the street panel, the transmission to the indoor unit of said dwelling of the generated call sign. The system therefore requires 4 + N wires, where N is the number of dwellings in the installation.

Indoor terminals:

At ALCAD we have a competitive range of housing terminals. From the traditional handset for bidirectional audio communication to the most frequent video indoor units compatible with Linea 201 and CUSTOM ranges of entrance panels.

In our range of handsets you can also find a range of universal handsets (TUN-xxx models) for any type of installation not compatible with the ALCAD entrance panel ranges.