LT Seko Replacement with 2 door entry buttons

[Replace]

Hello all,

I have been reading through this thread

https://www.diynot.com/diy/threads/security-intercom-handset-replacement.335978/

which has indicated that I can replace my LT Seko handset (LT TERRANEO 603 (Original) to be exact: http://www.intercomsrus.com/handset pdf/LT 603 Original Intercom Handset Data Sheet.pdf)

with a Terraneo 603, Terraneo 600WS or Comelit Universal Handset 2603U.

I have a specific problem in that I need a handset with two entry buttons (the current handset has one button added to it). I'd like to neaten everything up and am therefore writing to ask if anyone here knows of a handset with two buttons that would be compatible?

Thanks in advance...

 

[Replace]

after a bit more studying it looks like the Comelit Universal Handset 2603U has a second button that can be used, am I correct? http://pro.comelitgroup.com/int/files_cms/14-manuali/file/2G40000674.pdf

 

[sparkymarka]

It has a normally open voltage free switch

 

[Replace]

sparkymarka, thanks for your reply. Does that mean it should work as a switch for the second door (I'm not an electrical expert!)?

EDIT: i've just looking into the workings of the second (added) switch of our current handset and it's just a simple contact switch (press button to close circuit, two wires connected)...

 

[sparkymarka]

Yes