TN 5HK External Speaker?

[Kai]

Hi There,

I am new to these forums but haven't seen any posts regarding what I want to do...

I have recently purchased a flat with a TN5HK entry system and from my research I understand that it uses the speaker in the handset to sound the buzzer. I am planning on putting some form of amplifier in line and a second speaker in a different room on this circuit and was wondering if anyone could point me in the right direction.

Alternatively I would love to use my arduino to sense noise on the line and send me and my partner an alert / allow us to open the door but this could be a bit beyond my capabilities currently.

I am a broadcast engineer by trade so am quite used to tinkering with electronics. We also own a share of the freehold of the building so as long as others in the building agree I cant see any problems with me doing this on a legal level?

Thanks,
Kai

 

[sparkymarka]

Google the handset , looks like you can have an extension speaker wired to V and 3

 

[Kai]

Thanks! I am looking at wiring in a passive speaker at the moment but cant find anything from Google to this specifically. I have ordered two different ones from amazon so we shall see if they work.

 

[sparkymarka]

Would try something like a Videx 512A 45ohm extension sounder