Gtwin technology

2 Non-polarized wires

Specifications of the system

  • Capacity to connect up to 4,064 indoor audio and/or video units, in a maximum of up to 4 access panels.

  • Monitoring of up to 4 analog CCTV cameras including D4CAM-GTWIN camera interface.

  • Integration of CE-GTWIN guard units.

  • Forwarding of calls to telephones or PABX telephone exchanges through IT-GTWIN telephone interface.

  • Forwarding of calls to mobile devices with the GCALL/GTWIN call forwarding Wifi module.

  • Camera with a 15º manual adjustment.

  • Guide for the visually and hearing impaired, through LEDs and voice messages (call in progress, in communication, door opening or busy system). Voice messages is optional, requires VM-GTWIN voice message module.

  • LED illumination for the activated camera, through photoelectric cell.

  • 3 integrated double call pushbuttons.

  • Privacy on audio and door open progresses.

  • Volume regulation for voice synthesis and audio level, with telephones and monitors.

  • Opening of two different doors from the same panel (relay one programmable from 1 to 99 seconds).

  • Removable connection terminals for easy connection.

Necessary elements

Use one EL632/GTWIN module per panel. This occupies the space of more than one module so:
- In compositions with Nexa Aluminum modular panel with more than 6 pushbuttons, an EL606D 6P module will have to be added to complete the second module. From the third module on, one EL610D 10P module must be added for every 10 pushbuttons until the desired number of pushbuttons is obtained (max. 127 addresses per column).
- In compositions with modular Nexa Inox panels with more than 6 pushbuttons, an EL606D 6P module will have to be added to complete the second module. Of this second module, two of the five double pushbuttons will not be able. From the third module, one EL610D 10P module must be added for every 10 pushbuttons, until the desired number of pushbuttons is obtained (max. 127 addresses per column).
In panel assemblies with more than one horizontal module, use one long RAP-610D link cable for each additional horizontal module.
When the structure of the installation is divided into several columns, use the MC-GTWIN column multiplexer.
In installations with several main accesses, for up to 4 accesses, use the interface for DPM-GTWIN input units.
For the confection of coded panels, the modules N3301/AL, N3403/AL and N3301A/AL can be used in aluminium Nexa panels and NX3301, NX3403 and NX3301A in stainless Nexa panels.
It must be taken into consideration that they cannot be placed in the first or second module, since these are occupied by the EL632/GTWIN camera module.
Use the D4L-GTWIN distributor to connect the indoor units. In case of cascade installations (IN/OUT) integrate the EL566 cards in the monitors.
Choose T-5924 telephones or TEKNA-S GTWIN and TEKNA-HF GTWIN. The maximum number of units within an apartment is 4 in parallel.
Use one FA-GTWIN power supply in single-column installations, add one FA-GTWIN for each MC-GTWIN column multiplexer and two FA-GTWIN for each DPM-GTWIN panel multiplexer.
Use 12Vdc electric release with a maximum consumption of 300mA.

More documentation

Download a sample scheme of the system here.  

Technology information is available on the "downloads" tab of the EL632/GTWIN control module.

For more information please have a look to our technical documentation at or the Golmar Docs app available for Android and IOS.


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